The Linux Command Line book opened up a lot to me. How Linux Works is very good, but the command line is so essential, and that book gives you some great starting knowledge like aliases and shell scripting.
Especially aliases. Take note of aliases, when you start using aliases it can change your world once you realize how much you can accomplish with what essentially are one line programs you wrote for you own personal needs.
Welcome beyond the pale, friend. You've made it to the other side. Only freedom awaits, should you have the determination to work for it.
The only exception is Mr. Robot. Check this command the main character runs as root:
Only show I've seen where they show real commands with really damaging effects.