I'll just add to AlexK's post. Do this before the material is taken up in class. The benefit of reviewing the material, even if you comprehension is incomplete is phenomenal. It really is a great thing to do. It will build confidence far more than it will increase your knowledge, but confidence will increase your performance far more than knowledge. You may scough, but it is true.
PR should only be part of your study plan, not the whole plan.
Good luck,
Iam2