I've been coaching for a while and 101 drills sounded great, but it fails to live up to my expectations. What you get is exactly what the book says you get 101 drills. They are well laid out and the descriptions explain how to set up and the equpiment required. The one complaint I have is the progressions, when you put a session together you usually have a main theme, like passing, so your drills need to progress in complexity through the theme. The progressions in the book look like an after thought and haven't been developed.
Overall the book is fine and is similar to "Soccer Practice Games" by Luxbacher.