Surprised no one else mentioned this. The official documentation includes a tutorial that is quite good. I would read it before jumping into Fluent Python. https://docs.python.org/3/tutorial/index.html
In addition, you can download the docs as a PDF. Several years ago, I printed the tutorial so I could sit on the couch and read through it, which was a much better situation than having to do it on a screen of any type. https://docs.python.org/3/download.html
I really wish all docs would have a PDF option.