I liked this class. I was really confused for like 3 weeks but once everything clicked It was easy. Not crazy difficult and if you've done chem 20A and thought it was fine then you will have a leg up in this class. It consists of two quizzes and a presentation and a final. I bombed the presentation and the second quiz and still did fine. The first couple of homeworks were really tough and imo all the HWs were graded too harshly, but all the information you needed to solve the HWs were either in the book or the slides. Reading the book can help you understand some complex topics if you're confused and helped me finish the HW in some cases but his slides are also really helpful for the quizes and final and he posts them if you have to miss lecture.