Unnecessary hype

The hype about this book I do not understand. Because of that I know works of the author, I was expecting much more. At the end I have a "booklet" held in the hand which, although here and there provides a few details in prose, but in the majority of pages refers to other photographers or left, where you can look at "great pictures". There are even links to YouTube videos that were created and uploaded by the author herself, and contain a lot of useful information, but I can buy to me even without the book, view.
The book has for me no value to said Youtube videos and unfortunately does not play in the same league as renowned Photoshop books on the German market, even though the author is actually much more adept in dealing with photography and Photoshop, as so Many German Photoshoper and photographer, one of which is otherwise known popular books from this area.