I would like to write a user manual that lists all available functions in each class, and includes the examples shown in the GitHub and in code files in the repo.

All functions already have somewhat descriptive docstrings, should use those to generate the user manual.

I believe there is some way to auto-generate class methods with docstrings into a HTML or Markdown page? Let me know if anyone knows how to do this.

Here is an example of what must be an auto-generated user guide (presumably from the docstrings of each function?):
https://matplotlib.org/stable/api/index.html