I picked up this guide book because we are planning a trip to Hawaii later this year. The chapters are laid out in the following manner:
Chap 1- The Best of Hawaii (this includes the author's picks for best adventures, snorkeling, restaurants, etc regardless of island)
Chap 2- Strategies for Seeing Hawaii (some general tips on your vacation, but nothing groundbreaking)
Chap 3- The Best All-Hawaii Itineraries (gives you ideal itineraries for 1 or 2 week stays in each of the islands)
Chaps 4-9- There is a separate chapter for each island. Each island chapter gives you an ideal 3 day itinerary, along with sections on the popular parts of each island. You also get the standard travel guide book features such as best restaurants, best hotels, best sightseeing, etc.
Chap 10- History of Hawaii
Chap 11- The Best Special-Interest Trips (such as special outdoor activities and food festivals)
Chap 12- The Savvy Traveler (some general tips on packing, getting around, etc)
This is a very good guide book if you are considering a trip to Hawaii, but are not sure what islands you want to visit. Since the book has to cover each island, you won't get the level of detail you would get in the "Revealed" series of Hawaii books. So if you are dead-set on specific islands, you may want to pick up the Revealed books instead, which have terrific reviews.
However, as a general Hawaii guide, this one is ideal. Every page is full color and there are plenty of photographs. It also comes with a foldout map in the back. It is pretty small and you could easily pack it in your luggage. But since you don't get the level of detail you may want, I would combine this book with a travel review web site such as TripAdvisor. You can use this book to get ideas on restaurants, hotels, etc, and then look at TripAdvisor to get even more details and recent reviews.