I've read this book about five times now. It is a joy to read and is full of useful diagrams. The book describes how to carry out surveillance on foot, by car and also on public transport. It does tend to assume that you have lots of people at your disposal, but you can still use the methods from this book if you're alone.
Surveillance equipment is covered briefly, as is night surveillance. The style is great, becasue it is easy to follow and very informative.
A must for any PI, spy or just anyone who like reading cool books.