Not too easy. Not too difficult.
Professor Paizis was sometimes hard to understand, but his class is based heavily on the book, so if you read the book it is very possible to get a good grade. Lecture is mandatory to earn clicker points, which were only a tiny fraction of the grade.
It was really obvious the professor cared about his students' learning; we would get frequent emails about cute little comics related to subjects we are learning in the class. I would say the final exam was much more difficult than the two midterms.
Hours per week:
Advice for students:
Overall, read and re-read the textbook. Find practice questions online, and go to recitation only if your TA actually helps you understand.