However, the book contains a number of typos, and while most of them aren't serious, it appears that the chapters were renumbered after the answers to the practice questions were already typeset -- making their answer key virtually useless and utterly unreliable. The answers to one chapter's questions are labelled as being for another chapter's ... a real mess.

I got the impression that this book was rushed into print in order to meet some deadline. While the textual content is very good, I caution the reader not to rely on the practice questions, not only because of the answer key problem, but because they are not particularly clear or well-written.