I got an A in calc two, I would study for all the tests but I think the thing that helped me the most was tutoring. Most schools have a free tutoring, so the week before every test I would spend some time in the math center going over problems and asking for verification/guidance when needed. It made the class a breeze. One of the best things I read on forum was that "in college its the kids that get A's that go to tutoring", even if I didn't feel like I needed it I would go.