It's a great book. The first edition was basically these notes, with some additions and corrections. The second edition (published in 2015) is more different.

It's a great book. The first edition was basically these notes, with some additions and corrections. The second edition (published in 2015) is more different. It was updated and reorganized to help clarify some common causes of confusion. I must admit that I liked the first edition better, but that may just be because I read it first.