Well, what exactly is the lever of physics. I'm actually in college studying physics and I'm going to assist in a class to help high schoolers make the transition form high school math to college level stuff, so that might help.
my tips:
math is important, there is some stuff that after a while you are expected to know, standard integrals and the like, and sometimes teachers just simply skip those making it very hard to follow if you don't know it.
get to know your classmates, seriously, it helps a lot to do the exercise with someone else. You can work together and solve the problem faster, and usually with a better understanding too.
Do the exercises, can't stress this one enough. this isn't about knowing what to do, it's also about being able to do it. And if you don't do the exercises you might have trouble with the second part.
Guess that's what I have for now, if I think of something else I'll post it here