We assume that you're regularly attending lectures and discussion sections, and working hard at the homework exercises.
Nothing here is intended as a substitute for that.
You should also take advantage of your instructor's office hours , listed on the first page of the syllabus. If those hours are impossible for you, contact your instructor about the possibility of setting up an appointment. Attendance is entirely optional. A different instructor will lead the session each week, answering student questions about material, lectures, or homework problems assigned in the syllabus. The first of these will be held on Monday, September 11 .