Not too easy. Not too difficult.
I would recommend it because its an interesting class, especially if your into science and the evolution of humanity.
I learned so much of the human evolution and how humans adapted to many changes of the world.
Hours per week:
Advice for students:
Read your text-books at least 45min/day and spend 15min going over your notes in your free time, its better to study in small chunks than trying to cram it all in before an exam.