This is why one attends lectures, reads the book, takes notes for both, and then assembles a summary.
It's called studying.
It's called studying.
I don't know why you provide a one method that should fit everyone, while everyone has a preferred way of studying that isn't necessarily the best approach for other people
Also, it's at least three distinct methods! Read before lectures, read after lectures, read on both sides. Dealer's choice. Neglects recorded lectures and the possibilities they open up.
Talking about people's preferences and studying is funny. Most people prefer not to study. Preferences have little to do with good study habits. The above approaches have worked for hundreds of years just fine.