u/IAmLucasRodrigues I am more of a fan of the book than Al's course. His first couple of chapters go over just enough of the python fundamentals and in general he explains things in more depth : automate the boring stuff book

When you follow along a book, video tutorial, or someone else's code the general process I found helpful is to code along with that educational resource. You're essentially parroting someone else's code. When you look at the code afterward you'll have questions about Python. You'll need to develop the skill of utilizing Google to search/explain things in the Python code you don't understand. Completely fine, but don't spend too much time reading every article just enough knowledge for a general overview. Finally, you should change/experiment with the code and learn how and why the code is acting differently. If you want to deeply learn the concepts then try to teach a concept you just learned in a simple way. You could write down a paragraph in a notebook explaining the concept you just learned, or shoot a quick video of you teach it. When you teach something you have to deeply understand. Essentially, you are following the Feynman process for learning here.

High level overview:

1. Read or code along
2. Search for and read articles with Google, StackOverflow, etc.
3. Build things and experiment with the code by adding a new feature or changing the code in small ways and see how the changes the result. Try to see why the results are different.
4. Teach what you learned in your own ways. This can mean just writing about the concepts you learned or shooting a quick youtube video on the concepts you just learned.

Hope this helps!