"Introducing Python"...

So I'm reading through a new book called "Introducing Python" now. I've made it through to the start of chapter 5 so far, and it's done a good job of explaining the basics like the math operations, variable assignment etc. I picked up this book because after reading through the first 5 chapters in my other book "Fluent Python", I saw that I needed to do some more work on the fundamentals before going any further. Both of these book are from the same O'Reilly series of Python books, so they should complement each other pretty well (I hope). I'm not a beginner at this stage with this stuff, but I still need to do some work to understand fundamental principles better. Between this and the DataCamp stuff I'm doing, I'm spending several hours each workday on Python. Hopefully some of it will stick in my head.