Recommended Problems
I believe there are very few problems to be done that you would not derive some benefit from. What I have done in the following list are to pick problems that I feel depict particularly significant concepts, or are very similar to the way in which I ask questions.

Chapter 1
1, 2, 8, 10, 11, 14, 15, 19, 21, 23, 24, 26, 29, 33

Chapter 2
1, 2, 4, 7, 9, 12, 13, 16, 20, 23, 24, 28, 33

Chapter 3

Chapter 4

Chapter 5

Chapter 6

Chapter 7

Chapter 8

Chapter 9

Chapter 10

Chapter 12