Professor Rozali is terrible at conveying information. His lectures will either immediately put you to sleep or confuse you. However, don't let this fool you. PHYS 170 is a very straightforward and easy course.

If you have a good prof, then you won't have to worry about much. If you have one like Rozali then read the textbook. It is very helpful. I found that I didn't have to study much for this course either. A few cram sessions before exam was enough for me to score an A.