Mastodon has several important differences from Twitter, but you'll get used to it. I've tried to mark all of the important differences with the :bangbang: emoji; forgive me if I missed some. It's been a while since I've been on Twitter!
I've done my best to make this understandable, but you're welcome to suggest changes! If you have a Github account, you can submit change requests directly; otherwise, feel free to contact me on Mastodon or by email at noelle AT noelle.codes
.
When linking to this page, please use the link http://guidetomastodon.com, and please credit @Noelle@elekk.xyz. Thank you!
Mastodon is a social networking software platform. It allows someone to run their own social media site (and let other people use it too, if they want), and each Mastodon site is capable of talking to all of the other Mastodon social media sites (as well as many others). It's like a cross between Twitter and email, but it's not exactly like either of those.
Mastodon is named after the heavy metal band, but themed after the extinct megafauna.
You post relatively-short status updates, and you can see a streaming list of your friends' status updates. You can keep notifications (replies, boosts, favorites, and DMs) in a separate column.
Mastodon's statuses are called "toots", like Twitter's are called "tweets". A toot can be up to 500 characters long - or more, depending on your server's settings.
Mastodon also supports hashtags, which are words prefixed by #, like "#gaming" or "#pineapple". You can click on a hashtag to search for other posts containing that tag.
:bangbang: Each Mastodon instance is independent but networked, like email servers. If you sign up for an email account on gmail.com, you don't automatically have an account on hotmail.com or aol.com, but you can send and receive messages to and from users on hotmail.com and aol.com.
Likewise, if you sign up for an account on mastodon.social, that doesn't make an account for you on every other instance, but you can talk to users from other instances and they can talk to you.
You can make accounts on multiple instances if you want to talk about different things separately. You could have an account on https://hackers.town to talk about technology, an account on https://elekk.xyz to talk about gaming, and an account on https://mastodon.online for general chatter. You have to sign into each account separately and keep each open in a separate browser tab or window. (The various mobile apps all allow multiple accounts, too.)
Keep in mind that in general, when talking about Mastodon, "instance" and "server" mean the same thing.
:bangbang: Mastodon has timelines that you can view beyond what you might be familiar with from Twitter: the Local timeline and the Federated timeline.
Mastodon starts with your Home timeline, which is roughly equivalent to Twitter's "Latest Tweets" timeline. This contains posts that you've made, posts that the people you're following have made, posts that the people you're following have boosted, and posts from any hashtags you're following. It also has a Notifications timeline. By default, this shows you any time anyone's interacted with any of your posts at all; there's a slider button at the top of the column that you can use to curate which notifications (favorites, boosts, replies, etc.) you see in that column. You can also easily set it to just show mentions - any time someone uses your @handle in a post.
The Local timeline is every post with a public status posted by users on your instance, with the exception of replies. (A reply is any toot posted in response to another toot - NOT any toot that simply mentions another user!)
The Federated timeline is every post with a public status posted by any user that your instance knows about, even from other instances. Your instance knows about a remote user if at least one user on your instance has EVER followed them.
The Local and Federated timelines can turn into firehoses sometimes. Be careful!
Unless there's a server hiccup, all timelines in Mastodon are reverse-chronological. If you see posts out of order, it doesn't mean there's an algorithm at play; it means your server received the posts out of order.
Unfortunately, no one can be told what the Fediverse is
The Fediverse is the vast array of servers that communicate via the ActivityPub or OStatus protocols. (Generally speaking, unless you're making or editing software to interact with the fediverse, you don't need to know what those are.) There are lots of different kinds of server software on the fediverse, like Pixelfed, Pleroma, Misskey, or WriteFreely. Mastodon is one of the most popular of these, and it's what this guide is about. If you're using one of the others, this guide probably won't help you much.
:bangbang: The short answer: Very carefully.
We've had fifteen years of Twitter, Facebook, and heaven knows how many other social media platforms becoming platforms for Search Engine Optimization, Brand Awareness, and Corporate Synergy, and I'll be blunt: most of us are really, really tired of it.
Mastodon isn't about leveraging followers into customers. It's not about SEO or brand loyalty. Mastodon is about people. Don't treat people like potential customers who might buy your stuff; treat them like people whom you might want to get to know.
If you're a person who makes or does something and you think someone might want to buy your product or use your service, great! You can tell people about it - just treat them like people, not marketing targets.
There's one behavior that companies often engage in that drives people nuts, and you really shouldn't do it: don't send unsolicited messages to people advertising your product or service. Get to know someone, engage in conversations with them, and if you think someone you know would be interested and doesn't already know about what you do, then tell them about what you do or what you make.
If you represent a company and your boss has told you that your company needs a Mastodon presence, here's what you can tell them (and you can tell them I told you to say it):
Mastodon doesn't really work like that. If we're going to have a Mastodon presence, it needs to be one person who's free to be a person on that account, instead of a corporate mouthpiece. That means the person on the Mastodon account isn't going to get along with everybody (although they should certainly try to) and is going to treat other users like they're people instead of marketing targets. If you're okay with that, then I'll get right on it. If not, then you need to do some more research into Mastodon before you establish a presence there.
:bangbang: Unlike Twitter, Mastodon has no built-in verification. We assume you are who you say you are. If you see someone with a checkmark by their name (like :white_check_mark:), they've just typed that emoji into their display name.
That being said, some instance admins do require proof of identity before allowing a user to register, but don't rely on this being the case.
If someone's impersonating you, contact the admin of the instance they're on to get it sorted out.
Mastodon instances will allow you to add metadata to your profile - up to four items displayed in a table on your profile page that don't count against the length of your profile text. If you use these fields to link to your other websites, some instances will allow you to verify that you own those websites by providing a link on those websites back to your Mastodon account. For instance, if you have a personal website, you can include the link to your website in your Mastodon metadata, and then include a link to your Mastodon account in the header of your website, and Mastodon will verify that you're the person who owns your website.
A Mastodon instance that allows this will have instructions on your Edit Profile page telling you how to add the verification link.
This one's big on purpose.
Picking an instance can be hard. Many instances have a specific focus: hackers.town
is a haven for computer touchers, wandering.shop
is built for fans of science fiction and fantasy, and botsin.space
focuses on the hosting and development of automated bots. On oulipo.social
it's illicit to post a toot containing any "e"s.
If you haven't created a mastodon account yet, you might find it useful to try one of the larger instances, like mastodon.social
- the flagship instance, with over 100,000 users - or mas.to
. These instances have large, usually-friendly populations that will help you find a more niche instance if that's what you're looking for. Be warned, though, that because of their size, the Local timelines on these instances can move very quickly.
(A brief note about mastodon.social: it is the largest general-purpose instance (the largest overall is a Japanese-language instance, mstdn.jp). Many people go there and never check out other instances. If you make an account on mastodon.social, consider treating it as a temporary waypoint while you find an instance that better fits your needs and interests. Once you've found one, you can export all the people you're following, muting, and blocking on mastodon.social and import them at your new account, so you don't have to go around and find everybody again.)
If you've already registered on an instance but you're not sure if it's a good fit for you, try asking around for instances where you might be a better fit. Also, try searching for a #hashtag that interests you; if you see a lot of people on one instance talking about that subject, it might be a good place for you to check out.
You can also try the instance picker on joinmastodon.org or the wizard at instances.social, although these have lots of instances listed and you might be overwhelmed. Take it slow and easy.
Yes and no.
There are two ways to accomplish this: you can redirect your account or migrate your account.
If you redirect your account, your old account will have a redirection notice added to it, and you won't be able to fully use it (I believe this mostly means you won't be able to post from it anymore). You'll still be able to export your account's data, and you can reactivate your account at any time. Users who go to your old account's profile will be told that they can find you at your new account. Nothing else will be transferred automatically. You can do this by going to [your server]/settings/migration/redirect/new
(for example, elekk.xyz/settings/migration/redirect/new). There's also a link on the account migration page. All you have to do is put in the name of the account you're redirecting to and Mastodon will handle the rest.
(You can manually move a bunch of your information over if you redirect your account. See steps 4-6 below.)
If you migrate your account, all the same things will happen as redirecting your account. In addition, all of your followers will be moved to your new account (so nobody has to find and re-follow you). You can, in addition, manually move your follows, lists, blocks, mutes, domain blocks, and bookmarks over, but the system won't automatically do that for you.
In neither case will your posts move over. You'll be starting with an empty post history on your new account.
Here are the steps for migrating your account, including optional steps. (It looks like a lot of steps, but I've split some things up to make the instructions easier to follow.)
Preferences
in the right-hand Getting Started panel, then go to Profile > Appearance
. Below your header and profile picture, make sure Require follow requests is unchecked. (If it's checked, you'll have to manually approve every follower the automated process tries to bring over.) Click Save changes at the top or bottom of the page if you had to uncheck the box.Account > Account Settings
. At the bottom of that page, under the Moving from a different account
header, click "create an account alias".username@instance
of the old account (for example, noelle@elekk.xyz
) and click "Create Alias".Import and export > Data export
.CSV
. Click that for each thing you want to move over to your new account; this will download a list of each of those in a standardized format. Make a note of where the downloads go.Import and export > Import
. For each of the files you just downloaded (except Lists, which doesn't have an import function yet):
Import type
) to select the appropriate kind of thing to import.Data
, click the "Browse..." button to pull up a file selector, and select the CSV file you just downloaded.Account > Account Settings
. Near the bottom of that page, under the Move to a different account
header, click "configure it here".username@instance
of your new account, along with the password for your old account. This verifies that you're the owner of the account (in case you forgot to log out and someone else is using the computer). Then click "Move Followers".And you're done! Please note that it might take a while to migrate everything over and to import everything you've uploaded, especially if you're moving to or from a large or old server.
:bangbang: Important: This process is the closest thing Mastodon has to changing your username.
Special thanks to Ted and arachnomyrmex for helping me make sure I got this right!
:bangbang: The short version: you can't. Once you choose a username for your account, it's immutable, so choose wisely.
The long version: The only way to kind of change your username is to migrate your account (see above), but again, you won't take your post history with you no matter what you do.
Some enterprising admins have tried changing someone's username directly in the database (at their request), and for whatever reason, doing so breaks federation for that account; they can no longer reliably send messages to other instances or receive mentions.
:bangbang: Mastodon usernames take the form @username@instance. My account on mastodon.social is @noelle@mastodon.social; my account on elekk.xyz is @noelle@elekk.xyz. If you're mentioning someone on a different instance, you have to type the whole thing (although the toot input box will help you auto-complete the username if it's a name the instance knows already).
If you're mentioning someone on your own instance, you just have to type the first part; if you're on elekk.xyz, @noelle will get to me just like @noelle@elekk.xyz will. If you leave off the "@instance" Mastodon understands that you want to talk to the local user.
The rules depend on which instance you're on. Each instance has a page at https://instance/about/more that usually contains more information about the instance and often describes the community guidelines. For example, mastodon.social has its community guidelines posted at https://mastodon.social/about/more .
Keep in mind that these are usually guidelines and not hard-and-fast rules. Since each instance is run by a separate team of moderators - often just one person! - they have the final say over what's allowed and not allowed on their instance. Your instance admins might even go so far as to block an entire other instance if their users turn out to be incompatible with your instance's values and the other instance's moderators won't help.
If you see someone breaking the rules, you can send a report. Click on the ...
under the offending post, and select Report @user
(which is usually at the very bottom of that menu). This will bring up a window where you can select additional recent posts from that user, if you need to, and also type out a reason for the report, so that the moderator who receives the report will understand why you sent it.
If the user is from a different instance, then underneath the report reason, you will also see a switch next to "Forward to their instance". This not only reports the user to the moderators on your instance, it sends the report to the other user's instance as well. Before you do this, check the rules of the instance they're on. They may not be breaking their local rules.
The moderators and administrators of your instance will be able to see that it was you who sent the report. If you forward the report to a remote user's instance, the moderators and administrators of that instance will not be able to see who sent the report — only that it came from your instance.
By default, you will not get any notification about actions that any moderators or administrators take in response to your reports. You can ask them, but be prepared to hear something like "we don't comment on how we resolve reports".
:bangbang: Mastodon (and other fediverse) posts can be chained together in different ways. I use three terms to refer to different kinds of posts. These might not be the terms other people use.
I've included a diagram here (it's a link because it's big). Notice how as soon as someone else's post enters the chain, your replies stop being self-replies. This is important, because self-replies and replies work differently in your followers' timelines.
If you click on a post, you'll see it in a kind of "tree view"; you'll see all of the direct ancestors to that post, and all the replies to it (and any replies to those replies, and so on). This is good for focusing in on the replies to a single post, but if you want to see the whole discussion, then scroll up to the top, to the very first post, and click on that; that will show you every reply to the first post in the chain, then every reply to those posts, and so on. It's possible you won't be able to view the very first post for a variety of reasons; if that's the case, you can select the ...
menu from a given post and then select "Open original page..." at the top, which will open a new browser tab with the conversation tree in it; you can proceed from there. (Unfortunately, there doesn't seem to be a way to view conversations in a true tree view.)
Under each post, you'll see three icons: a camera, a globe or a padlock, and the letters "CW". Click on the globe or padlock to choose the privacy settings for your post. You can set the default privacy level for your posts under Preferences > Other > Posting Privacy.
Keep in mind that some servers, which run software that's compatible with but not the same as Mastodon, will ignore these privacy settings if you send a message to their users, so be careful!
I cannot stress this enough: Mention-only toots ("DMs") are not encrypted or secure.
The admin of your server may be able to read any toot posted on their server, as well as any toot sent to a user on their server. However, it's a pain in the ass to do so. Your private posts will not appear in the admin panel on the website; your admin has to manually, directly access the database -- typically through logging into the server's command line -- in order to access them. This isn't something admins do on a whim; they only do it when they absolutely have to, and this is because:
This is a necessary security precaution. Admins don't want to read your private toots, but they have to be able to because otherwise private toots allow some users to secretly harass others or to conduct illegal dealings without the admin's knowledge, and under many laws the admin will be responsible for enabling the harassment or illegal behavior even if they didn't know it was happening.
That said, in general, your admin will only look over the toots you've marked Private if they have reason to believe harassment or illicit dealings are going on. Make sure you trust your admin to act like this, and if you don't, it might be time to look for another instance.
While we're on the subject, it's worth noting that this is true of nearly any social media software. Twitter admins can read your DMs. Forum admins can read your private messages. This is not a novel or unusual feature of Mastodon; I'm just making sure you know about it.
As a general rule, if an application you're using isn't end-to-end encrypted, the information you're sending isn't secure unless you take extra steps outside the application to secure it.
If someone follows you, you incur a life debt to that person. You will be required to lay down your life for that person when they need it. Once you've done so, they will unfollow you and, if you survived, you are free to go about your life normally.
Just kidding.
If someone follows you, they will see your posts on their Home timeline and they will be able to see your followers-only posts. If you want, you can limit the people who can follow you by clicking on Edit profile and selecting Lock account, which will allow you to manually approve and reject people who want to follow you.
Yes and no.
With a locked account, you get to approve who can follow you through the Mastodon interface. This means that only the people you approve will be able to see your followers-only posts. Your unlisted posts will still show up on your profile, and your public posts will still show up on your profile and on the local and federated timelines.
However.
:bangbang: Every Mastodon account (on an unmodified server) also creates an RSS feed of their public and unlisted posts - i.e. the posts that appear on the account's profile. It does not include followers-only toots or direct messages, and if you've put a CW on a toot, only the CW appears in the RSS feed, not what's underneath it.
Your RSS feed appears at https://<your-server>/users/<your-username>.rss
; for example, since I'm https://elekk.xyz/@noelle
, my RSS feed is https://elekk.xyz/users/noelle.rss
. (Remember to remove the @
!)
Anyone can subscribe to these feeds using an RSS reader to see your public and unlisted posts when you post them. You can't control who can see these feeds, but they do not (and, by design, cannot) contain your followers-only or private toots. If you only post followers-only toots, your RSS feed will be empty.
Remember, you can set the default privacy level for your posts under Preferences > Other > Posting Privacy. If you have a locked account, you might prefer to set that default to followers-only so you have to make an active effort to post an unlisted or public toot.
You have a couple options.
All three of these options are available by clicking the ...
under one of the user's toots or on their profile inside the Mastodon web interface.
However.
Just like with a locked account, any user — even ones you've blocked or that have been suspended by a moderator — can go to your public page or your RSS feed to view your public and unlisted toots. There is not a good way around this, unfortunately, except to make all of your toots followers-only.
You will not get a notification if someone mutes or blocks you.
If someone's muted you, there's really no way for you to tell. If they consistently don't reply to you when you mention their username, you might get suspicious, but Mastodon deliberately makes it almost impossible to know if you've been muted. (Among other things, this is a stopgap to try to prevent someone harassing you by creating multiple accounts to get around mutes.)
If someone's blocked you, you will no longer be following them, their posts won't appear in your feed, and when you view their account profile within Mastodon's web interface, none of their posts will load. (It is worth noting that if you're looking at the profile of someone you don't follow, sometimes their posts won't load and it's just because the server is being slow, not because they've blocked you, so don't be too quick to make an assumption.)
If someone has blocked you, you can still go to their public page and see their public and unlisted toots; public profiles don't require authentication (i.e. you don't have to be signed into that instance to view them) and so they can't tell who you are or that the user has blocked you. That said, let's be honest. If someone's blocked you, they don't want you around. You can keep reading their public and unlisted posts, but maybe don't? In a substantial way you're invading their privacy and deliberately crossing a boundary they've set up, and "the software allows me to, so it must be okay" is a pretty flimsy justification. Just leave them alone, please.
Don't worry. First, you can't; Mastodon won't let you post a toot over the instance's character limit. You won't get in trouble or anything.
If you find that what you want to say is too long for a single toot, or if you think of something else after you've posted a toot, you can reply to your own toot. Mastodon supports toot threads, so you can toot as many times as you want to, replying to each toot in sequence, and the whole series will show up when someone clicks on any of the toots in the thread.
So if your toot is too long, just split it up and make the second half a reply to the first; if you think of something else later, just reply to your original toot and the reply will show up whenever anyone clicks on the original toot.
To make a hashtag, type "#" and then any number of letters or numbers. Accents count; punctuation, spaces, symbols, and emoji don't. #howismydaygoing is a valid hashtag; #höwísmydàygôíng is valid; #how-is-my-day-going isn't (it'll just catch #how).
A hashtag is metadata about your toot: it provides additional information that doesn't necessarily belong in the body of the toot, but is useful for understanding. If you're a programmer, it's sort of like a code comment.
As a bonus†, hashtags are tracked by each instance. Clicking on a hashtag takes you to a list of public posts with that hashtag. You can use them to track #politics, check out the users people are recommending on #FollowFriday, or see people's artwork using #mastoart. With Mastodon release 4.0.0 you can follow individual hashtags so that toots containing a followed hashtag show up in your timeline.
Don't go overboard with hashtags. As a guideline, your hashtags probably shouldn't be more than 10% of the total length of your toot. If you find yourself going over that, you might be spreading things a bit too thin.
† This was actually the original intent of hashtags, but the usage has moved on since then.
:bangbang: CW stands for Content Warning. It hides your post behind text (which you get to choose); it's like a Read More link.
You might use CWs for:
Some common abbreviations you'll find in CWs are:
In general, just use your best judgment; think "is there a reason someone might not want to see this?". You have the opportunity to take an extra moment and make the fediverse a nicer place for people to be. Why wouldn't you take that opportunity?
An important note: Mastodon does not track hashtags that are in the text of a CW. Mastodon does track hashtags that are under a CW. Always put your hashtags in the body of your toot, never in the content warning.
:bangbang: Clicking that will hide your image behind a "Sensitive content" overlay. This is good for nudity, gore and violence, political topics, etc.
You'll notice that if you have both an image and a CW on a toot, the "Sensitive content" overlay is turned on automatically and can't be turned off. That's on purpose.
:interrobang: When you attach an image, you'll see "Edit" (plus a pencil icon) at the top right of the image. Clicking this will pop up a dialog box that lets you determine what part of the image should show in the preview; it also allows you to set alt-text for the image, which people can read if they mouse over the text, and which screen-readers (such as for the visually-impaired) can read instead of just saying "embedded image".
For images that are largely text (for example, a screenshot of a Tumblr post), Mastodon has built-in optical character recognition (OCR) and can often transcribe the image for you, although you should probably double-check the transcription to make sure it's accurate. If, for some reason, your instance's OCR isn't working, you can use an online tool like Online OCR to transcribe your image. And if all else fails, there are OCRBots on the fediverse that will reply to your post with a transcription if you @mention them.
Text in the description box has its own character limit of 1,500 characters; it does not count against the character limit for your toot!
In a word: Accessibility.
Some people who use Mastodon are visually impaired and use screen readers. Some people who use Mastodon have images turned off to conserve their data usage. Sometimes disk errors or server errors happen, or your admin decides to prune old files, and your image just doesn't load anymore. Captioning an image allows people in these conditions to participate in your toots with full context.
You can also use image captions to insert additional jokes (like webcomics often do) or additional commentary on the image. Take advantage of the fact that image descriptions have their own separate character limit and put whatever you like in there. The sky's the limit.
You can insert an emoji your server has installed by putting its name between colons, like this: :blobheart:
. If you type a colon (:
) and then start typing after it, with no space, Mastodon will suggest emoji for you to use. You can also select one directly; at the top right of the Compose box is an emoji (currently "cry-laughing"), and if you click it, you'll get a context menu full of the emoji that are available for you to use.
Mastodon users often call custom emoji "emojos". The reasons for this are lost to time.
:bangbang: Each instance can define custom emoji for their users to use, and many have taken advantage of this. Your instance admin can copy emoji that they like from other instances. If you see an emoji that you like and it's not available on your instance, ask your admin to copy it over. iliana etaoin has made a custom emoji finder so you can see which emoji are available to you.
Yes. Mastodon allows for searching posts, profiles, hashtags, and news commented by people on all Mastodon servers.
Starting from v4.2.0, Mastodon makes it possible to search post contents. The availability of this feature depends on the server settings and individual preferences of each person whose posts you want to search for. By default, this setting disabled in your account settings. You can activate it by going to 'Profile,' 'Privacy and reach' and selecting the option 'Show public posts in search results.'
Additionally, if you interact with a particular post (e.g., liking it or replying to it), that post will become searchable for you.
For many groups of people, full-text search may be a significant harassment vector. Harassers often search for particular words or phrases (e.g., "TERF," "homophobia," or "white supremacy") to attack and harass others. That's why the post search feature is turned off by default. That way Mastodon allows people to make a conscious choice whether they want to be visible to others.
:bangbang: Like search, it's an anti-harassment feature. If you want to reply to someone's toot, you have to actually reply to it; you can't just broadcast it to your followers with a snarky comment.
(Don't try to get around this by screencapping toots and attaching them as images. You can do it, but the Mastodon community tends to frown on it and you'll get a bad reputation pretty quickly if you keep it up.)
It can be! But it gets to be a comfortable weirdness.
Here are some common weirdnesses:
You'll get used to it.
In early November 2017 we lost a popular Mastodonian to suicide. and commemorate our friend Natalie Nguyen.
There are no hard-and-fast rules for everybody, and (as noted above) different instances have different guidelines. That said, many people follow some simple guidelines meant to make Mastodon a friendlier place for everybody.
You might get some mileage out of Pinafore, an interface for Mastodon by Nolan Lawson. However, Nolan has (as of January 2023) discontinued support for Pinafore; the website still works, but it will no longer be updated as Mastodon grows and changes, and it may break when Mastodon moves to version 5.x.
Halcyon is a web client for Mastodon that replicates the Twitter interface. Since Halcyon is itself open-source software, there are multiple servers running it; you can choose the one you like. Use your existing Mastodon login when you use Halcyon; for example, if you have an account on elekk.xyz, you would use your-account@elekk.xyz
and your Elekk password to log in.
Remember that Pinafore and Halcyon are third-party clients, and make sure you trust them before you give them your login information!
Mastodon has a responsive design, so you can use it in your phone's browser. Alternately, there are many apps available for Mastodon, including an official "Mastodon for iPhone" app released in August 2021. On iOS, try Toot!. On Android, try Tusky.
(NB: I've been told that "Tootdon silently forwards copies of posts you interact as well as the auth token to your account to its to own servers." I don't know if that still holds. As always, be cautious when giving apps your information.)
Alex Schroeder has an excellent Mastodon Archiver that will help you back up your account and much more.
In the web interface, yes. The Mastodon web hotkeys are documented at https://<your-server>/web/keyboard-shortcuts
, which you can access when you're logged into the web interface. (You can find the link at the bottom of the Getting Started column, labeled "Hotkeys".)
In general:
You might not be on Mastodon! The Fediverse - the vast collection of servers connected by the ActivityPub/OStatus protocol - has a lot of different kinds of servers on it. Your server might be running Pleroma, Misskey, GNU Social, or something else! Unfortunately, I don't know much about them, so you'll have to ask their users for a getting-started guide like this one.
Because Mastodon is open source, you can make a copy of it and make any changes you want. Some people have decided to make their changes public; one of the most popular edited versions of Mastodon is Mastodon Glitch Edition, or "glitch-soc". (It's called that, as far as I know, because it originated with the instance glitch.social. Glitch-soc has a bunch of extra features that users often appreciate, like the ability to use Markdown in toots and the option to make a given post only show up on your local instance and not get federated out to other servers.
Ask around! People are usually pretty happy to answer questions and help out. Also, you might benefit from checking out one of these other guides, which have a different perspective:
If you really get stuck, ask me: https://elekk.xyz/@noelle
Please check out the contributions guide!