I'm new and have a suggestion for Day 7. I suggest adding a link for how to enable port 80 / web traffic for people using the Oracle Cloud - given their generous free tier. The link could be just like the existing links for AWS/Azure/GCP. It took me a few hours to figure out, but after trying lots of wrong / unsuccessful things (trying to make manual modifications to iptable files, etc), I was able to figure it out. In short, I used the instructions here: https://docs.oracle.com/en-us/iaas/developer-tutorials/tutorials/apache-on-oracle-linux/01-summary.htm#add-ingress-rules
In this tutorial, you use an Oracle Cloud Infrastructure Free Tier account to setup an Oracle Linux instance.
Perhaps there should be a small note to only follow the "3. Enable Internet Access" so people don't follow any of the unrelated instructions. I'm hoping a link to this can save future students a bit of time. Thank you for maintaining this resources for all of us trying to learn linux. I'm on day 9 and pushing along.
From Dtrizzle on Discord: