Nevertheless, missing a lecture is a matter of choice for a student. Attendance of lectures may be a factor in assigning the final grade only in borderline situations. Attendance for the tests and exams is mandatory. If you miss the final exam with a valid excuse, contact the instructor well before the end of final exam week. It is absolutely essential for your success in this course.
Chemistry is fun ,- but only for the one who works hard.
Thoughtful practicing, and practicing only, is the key for mastering this course. Solutions manual might be helpful as a last resort, but you will never learn how to solve problems unless you solve them. Your learning can be greatly facilitated by the group discussions. It's useful to briefly read the material before it is discussed at the lecture. Concentrate on the summary at the end of each chapter.