<p>I have not touched the E&M part yet but the Physics C Mechanics was extremely hard for me, provided that I’m quite confident with my Calculus background - and I’m not talking about kinematics here. Oscillations anyone? You guys must be geniuses to self-study AP Physics C… I know I can’t.</p>
<p>But to the OP, you will obviously need a textbook because I’ve glanced through all of the AP prep books available for Physics C and they’re only to reinforce the information you’ve already learned, not to get you really understand the concepts. And I find the practice problems in there way easier than the problems I have to do for school too so… Hope that helps.</p>