One erhählt valuable tips for boss battles or on the game mechanics. Also you can take any treasure equal and again check on the cards if you really has everything. Also helpful are tips on the edge, such as a good place to gather in a short time a few KP for its chars.
Anyone who thinks the book betray in any way a bit of the story is wrong. It's just helpful, and perhaps could even save the occasional frustration.
As for quality, I agree with the previous speakers. A very nice, high-printed book.
