I wasn't impressed. I guess if you know absolutely nothing about digital photography it's a good guide. It looks good just thumbing through it but when you get to reading it, it was repetitive, and at times contradictory to a previous chapter. If you're thinking of it for yourself, you're way above it. It's been awhile since I read it but I do remember parts that were...shall we say the long way around a technique. I've learned more from the photogs here and on DD, and lots easier, than I found in the book.
I can only say, for me, it was a waste of money.