Take good notes. This is easier said than done, but learning how to take good notes will help you immensely once it comes time to study. Write down everything your teacher writes on the board or puts up in slides. Try to record as much of what the teacher says as possible, but don't allow taking notes to distract you so much that you forget to listen.[2]
Review your notes daily, right after class. This will help reinforce the information you just learned.[3]