I read and attempt all sample problems before looking at their solutions. I do most of the problems/exercises, and compare my solutions to those in the back of

I read and attempt all sample problems before looking at their solutions. I do most of the problems/exercises, and compare my solutions to those in the back of the book. I might search YouTube for some additional help on some topics. The hard part is when I just don't grasp something. For that, I used to go to my neighbor who was a retired physics professor. Nowadays I'd look for a forum, probably Reddit, to get specific help.