The chapter "Learn from the Web" is *almost* worth the price of the book. It lays out clearly and concisely the differences between web and windows interfaces, and why the web interface is the way it is.
The rest of the book, unfortunately, is less informative. It's somewhat painful to read, as the author repeats himself incessantly. That is, he says the same thing over and over. Many times. One has the impression he was paid by the word: each chapter ends with a couple pages of recommended reading, frequently with the same books. The author rambles endlessly about which features he does and does not like about different windows applications. No attempt is made to compare his personal preferences with real user reactions or usability studies. Frequently in order to provide a 'bad' example, he shows how an existing dialog could have been made even worse. No such dialogs exists. It's the old straw-man approach. There are no examples of how an existing dialog might have been made better.
In between repeating himself, rambling, referring to other authors and building straw men; the author manages to convey a reasonable collecton of user interface basics. Emphasis on basic. Repeated many times, of course.
If you are trying to bring your interface *up to* Windows levels, then this may still be a useful book to you. However, if you consider Windows way behind in the art of the user interface, or if you have any UI experience at all, you will not find further enlightenment here. (Except perhaps the first 4 pages of the Web chapter.)