Getting started update milestone 3

[pavlenex]

Alternative to https://github.com/stratum-mining/stratumprotocol.org/pull/190 Closes #186

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[pavlenex]

Linkcheck is false (twitter firewall blocks the checker)

@plebhash @GitGab19 feel free to take a look when you get a chance. I am not sold on sidebar naming.structure but I guess we can rename those easily, structure-wise I am happy how things are nested.

[plebhash]

added a few suggestions

aside from them, LGTM

[plebhash]

CI seems broken though

[pavlenex]

Thanks for a thorough review and catching inconsistencies @plebhash! CI are triggered by false linkcheck since Twitter blocks it, as mentioned here good on that end, it's never reliable.

[pavlenex]

One thing missing in Google Doc and existing on a current guide is how to run a CPU miner. While we certainyl don't want to prioritize it, perhaps I could add it under "customization" or anywhere else. Up to you guys @plebhash @GitGab19

[plebhash]

One thing missing in Google Doc and existing on a current guide is how to run a CPU miner.

the diff of this PR still has those instructions

here's a copy-paste (please be careful with the markdown notation while copy-pasting from this):

---

CPU Miner

If you don't have a physical miner, you can do tests with CPUMiner.

Setup the correct CPUMiner for your OS:

• You can download the binary directly from here;
• Or compile it from https://github.com/pooler/cpuminer

Go into directory of the downloaded CPUMiner, for example:

cd Downloads/

Then run:

./minerd -a sha256d -o stratum+tcp://localhost:34255 -q -D -P