A good question from you during class would be welcome, and if you have any other kind of problem discuss it with your instructor before or after class or during office hours. Communicate your concern now. In the meantime come to class, read the syllabus, do the readings. Learn how to listen critically and develop skills in taking notes. That means that a three-hour class will cost twelve hours a week.
Smart students spend significantly more.
Make an outline. Make outlines for each study question. You may wish to organize a study group to discuss the questions and potential responses. But perhaps you should have done that earlier. If you have a study sheet in hand and you have reviewed your lecture notes, the next job is to review them again focusing on what the question asks you to do.