Section devoted to Bash, covering some internals, tips and others…
To be precise, we all should call it GNU Bash, as the Bourne Again SHell is the GNU Project’s shell.
Click on Command load and execution in Bash to continue where we left it from booting
If you want some light about GNU and Linux, read Richard Stallman’s Linux and the GNU System article.
Not bash, but it might good fun to build a shell!!
Some Bash useful links:
Bash scripting cheatsheet at devhints.io
The Bash Hackers Wiki
Under this section: