You could just figure out which areas of Physics you're weak in and do the problems from your Physics book from those chapters. Honestly, though, I've found that with Physics it seems like it's somewhat of a "you get it or you don't" type of subject. I think it's difficult to really practice the right problems since you don't know exactly what kinds of problems to be able to solve. As a result, I think your best bet is probably just to do a lot of problems regardless of the source or exact topic until you learn to think like a physicist.