After mothballing my Free Python Books project it became my most popular on GitHub, as it has just crossed 5K stars with almost 700 forks.
https://github.com/pamoroso/free-python-books
Some more context on the project and why I abandoned it:
https://journal.paoloamoroso.com/i-mothballed-free-python-books
Speaking of which, for my own projects I'm about ready to leave GitHub for Codeberg.