Not too easy. Not too difficult.
Attend every class and ask any questions that you might need clarification on something in the class.
Be in class every class. I learned a lot of Mendelian genetics that I had not learned in previous biology courses.
Hours per week:
Advice for students:
Make sure to complete the mastering assignments and attend any review session that the professor ask so that you can get clarification if needed and other classmates attend them as well so you can talk with others to see what they say about a certain topic or how they achieve the answers or how they study.