Maybe not a 'complete' guide - studio lighting and white balance are not discussed in detail, however it is a very good introduction with some fairly advanced techniques explained.
Before you buy a digital camera, this book is worth buying as it explains the pros and cons of various camera features in some detail. I'm on my third camera, having learnt from experience, it could have been cheaper by replacing the first two with this book!
Great for the coffee table, it's the kind of book you can open at any page and find something interesting. The CD has all of the fantastic photographs from the book, it really is very well illustrated.
In summary, maybe not a book for the experienced digital photographer, but for the rest of us, it's very good nonetheless. If you know someone thinking of getting a digital camera (or getting one as a present), this will be an ideal gift!