I really do think it would be possible for a moderately to not at all agile reader to use this book to teach him/herself jazz dance. It covers all the basic moves, with very detailed diagrams and instructions. If you don't have the means or the access to take a jazz class, this is the book for you! It'll get you off the couch, show you how to express yourself through dance, and you'll be doing it correctly, without hurting yourself.
For someone who is hesitating before taking a dance class for fear of looking foolish, get this book and be bold! If you're going to go down--go down in flames! (And it won't kill you. Really!) Dancing is one of the purest joys in life, and this book makes it accessible to everyone.