Please note that I have this book with Thomas Nowers as author, released in 2002, ISBN 1-931841-77-2 - looking that up in Amazon leads me to the the Gutschmidt book, bizarly.
Anyway, I borrowed the Nowers book from the local library and after 40 pages had to fight the urge to start pencil-editing it. I have counted over 40 bad errors in both the text proper and (worse) the coding examples. Apart from that, the writing style is poor (the author overuses phrases like "really" and "to be honest" without adding any meaning to his arguments), sections and sentences are repeated and often seem unconnected where an internal reference would have been natural. The author could have saved himself the thank-you's to the people that contributed to his book by editing it.
Hopefully, the new author has significantly improved the new version (if that is what it is).