Calc 2 is quite a difficult class, but Professor Rolf really does his best, and I found the flipped classroom setup helpful. Professor Rolf is very approachable in class and in office hours and wants you to succeed. I can't say that the class was always enjoyable, since it was rather brutal at times, but this was from the material itself and not because of Professor Rolf. In my experience I especially struggled with shell method integration at the beginning of the semester and Taylor series toward the end. You'll generally have two video lectures with short "prep problem" sets, two longer homework sets, in-class questions, and a quiz to do each week. Starting a few weeks into the semester you'll have written homework sets due every other week. If you're a STEM major, you most likely are required to take this class, but take it with Professor Rolf if you can to make things better.