Physics

If any of you were wondering whether or not it is a good idea to try and teach yourself physics let me inform you of my attempt at it. I'm getting pretty frustrated at this point. Most of the material is fairly straightforward, but then there's always 1 or 2 sections per chapter that I'm just confused about. The chapter started off with an entire paragraph to tell me that emf means battery or something that produces a potential difference (to all of those that actually know physics and that I'm totally oversimplifying the situation, I only need this class to graduate and thus don't really care) Today the confusing section is the "branch-loop method" of solving problems in DC circuts. Also I'm struggling through the idea of RC circuts. I hope I figure this out soon, like today, because I need to be taking a test over this chapter and two more by next week! YIKES!