What CI4-related book would you like?

I'm also interested in a book focused on developing mobile apps using CI. I'm aware of some tutorials and online resources that do this, but I'm curious if there's a need for more in-depth coverage.

Finally, I'm considering a book focused on developing web applications with CI. This would include topics like best practices for structuring applications, using the Model-View-Controller design pattern, creating custom libraries and helpers, and more.