Autodocs
Integrated into the code itself, autodocs have a multiple objective:
     - Inform your code editor (Vscode or other) by allowing it to display the parameters of each function, autocompletion etc.

     - List all classes , methods, function , and search them, but also force an IA/LLM to use only what is present in the list (LLM tend to invent methods that do not exist !).

     - Give details when necessary.

They have been parsed, to be more readable, with a search engine there :
For the PHP side: List of PHP libs, methods and tools

For the Javascript side: List of Javascript libs, methods and tools

In project-related github repository, it is not uncommon to find a "readme", and this readme is often essential.
Especially in the case of the installation of the environment, where you will find a different "readme" depending on the branch chosen.

So if, cross a readme.md somewhere in the code, take the time to read it please.

Training
On this site, several small trainings are available concerning:

and are gathered in the "Documentation" menu