Here are some other great places to learn about unix!
Google is always a great place to start if we have a specific problem we are hitting. It’s most often going to be something others have already ran into and discussed 🙂
Super-helpful sites with excellent forums include Biostars and StackExchange.
Command-line bootcamp setup by Rik Smith-Unna provides an awesome self-contained bash environment alongside tutorials.
Explainshell.com allows pasting in a command to have it broken down into individual parts.