What @AroundHere said. Be doing the reading ahead of class time, make a study group (really, really helps in classes like physics), go to Prof/TA office hours, and practicepracticepractice problems.
What @AroundHere said. Be doing the reading ahead of class time, make a study group (really, really helps in classes like physics), go to Prof/TA office hours, and practicepracticepractice problems.