As I said in Chapter 1, this book is not intended to be comprehensive. Instead, the goal is to provide you with a general understanding of programming using the Python language. The good news is that if you have made it this far, you should have a solid understanding of most of the syntax and constructs of Python. However, the more exciting news (if you want to look at it that way) is that there is much more to explore.
Python language documentation
Python Standard Library
Python external packages
Python development environments
Places to find ...