Hello!
The most helpful tip for physics classes is doing practice problems! These allow for a clearer understanding and application of the concepts taught in class. Practice problems can usually be found in the textbook. Another helpful thing to do is joining an SLC (or any other) study group! Study groups usually provide more practice problems, and it might be helpful to go over challenging concepts with other students. If you are ever stuck on a specific concept, I would recommend going to the professor’s office hours or looking up videos on Youtube or Khan Academy. Sometimes, hearing a concept explained in a different way can make it more clear for you. 
Good luck! 
Sara, PMH Advisor