When I was studying physics, I found Feynman’s books in the library, read them all, and had the feeling I understand everything! But then I tried to solve some final exams from previous years, and realized the feeling is false. These books gave me great intuition - but they made all the math look deceivingly simple, and as a result it is hard to develop the actual problem solving skills and intuition. I know my exper…
Physics is a bit like that anyway though, you can't learn it by reading or listening to anyone, you have to solve things yourself from scratch, usually multiple times. Reading good books/having good lecturers certainly helps, but there is no way to replace the work.
I watch with wry amusement how schools constantly try to take the work out of learning. It never works. It's like putting labor-saving machinery in the gym - you'll never get stronger. You gotta put in the sweat.