I agree. I also started this book. But in order to learn, I have to implement it myself. However, if everything is already provided, how not to fall into the trap and just copy and paste everything? Giving you the illusion to you learned it?

I read in another book about how to learn, there is something called the illusion of competence. If you passively read something a couple of times, you will think you learned and understood it. But in reality you just recognized it. Without the external triggers and clues you couldn't solve it.