Documentation in command line

Hello,

Do you guys know any documentation besides ansible-doc? Where can I get more information. Ansible doc is good for working with modules but it is not helpful to work with lets say lists, loops and so on. I was hoping that there are more documentation.
I am looking for command line documentation, I know there are multiple sites, that give documentations, but I will be taking certificate where I wont have access to internet.

Thank you