I recently purchased this book on a friends recommendation, with a caveat that patience is needed.
I'm about a quarter of a way in only and I've run into numerous problems such as missing files, misplaced sections (a very early instruction to add "both" templates to a layer, when the instruction to make the second template is actually two pages later in the book for example) and some seemingly misplaced images that don't match the text.
However, reading other reviews here it is very apparent that the author himself has worked hard to contact and assist users with these problems which suggests to me at least that a lot of these things were out of his hands. The content so far has been very informative, but a user needs to be willing to take a step forward and do some looking and digging to find ways around the publishing errors.
Regardless of these, I will be continuing to work through the book and expect it will remain a common reference source for me for some of the techniques within.