Not too easy. Not too difficult.
Birdsong is a great teacher - really like the flipped lecture style.
Highlights of the course would be studying for tests the week before they happen. A WEEK AT LEAST. I learned that otherwise, you will fail because you need at least a week to learn about stuff you haven't been learning all unit long. And this week is the week where you actually start understanding everything. Hopefully.
Hours per week:
Advice for students:
I recommend doing or at least skimming all the readings and watching all the videos on 2x speed. Also study AT LEAST A WEEK in advance for tests.