[wadkar]

Personally, I learnt my bash by reading a lot of Gentoo EBUILD scripts and config files. I can recognize other Gentoo users just by how many curly braces and double quotes I see in a simple one liner.

The one resource that I have bookmarked decades ago and would highly recommend to get the ball rolling are the TLDP pages on bash:

https://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html

https://tldp.org/LDP/Bash-Beginners-Guide/html/index.html

https://tldp.org/LDP/abs/html/

Not certain if they’re up to date or error free but I really enjoy the style and tutorial/show by example nature of the TLDP