Others say...

"This strategy guide needs an update!"
The fact that this guide was released at the same time that the expansion, World Of Warcraft Expansion: Burning Crusade, came out, should give you a clue as to how in-depth this guide can be (in other words, it's NOT in-depth at all).
Compared to World of Warcraft Official Strategy Guide, this guide is sorely lacking, because there are many regions that are merely glossed over, so you'll be missing monster info, quest info, and overall detail that you would have seen in World of Warcraft Official Strategy Guide. What Bradygames should have done was create a version two of this guide when they released World of WarCraft Dungeon Companion, Volume 2 (Official Strategy Guides (Bradygames))
What is in there is some nice info on Blood Elves and Draenai, but that's a few pages and doesn't justify the price of this guide.

"Not a good game guide"
If you're buying the WoW game for the first time get the first book. But if you've played this game before and you think this book will help, I really dont think its worth the money. There's better websites that can help.

"Great help for beginners"
If you are new to WoW, and you've decided to get WoW and the BC expansion, you will really benefit from this guide. If you've played WoW for a while, and are just getting the BC expansion, don't bother, you will not get much out of this guide. The walkthrough for the two new race's first missions are really cool, and very helpful to new players.

"great maps"
maps are very usefull another great book although it falls apart easily as usual for Brady guides

"0 stars was not available so it got 1 star"
This expansion ruined WoW.
Got my character to 70 bought the flying mount, then canceled my subscription.
Why? you may ask, class balance has been ruined.
I spent more time being corpse camped by random mages, then I spent playing.
To be sure, I understand that corpse camping is a part of the game, what I don't understand is how a level 70 character can be basically 1 hit by another 65 plus character.
Solution? simple, put a limit on the amount of dots a mage can stack on another character in pvp, have different limits applied to pve.
Anyway, If you enjoy WoW you may be disappointed by the BC expansion.
Side Note, IF you are a WoW junky that spends every waking hour in game, and have all the best gear, then BC may be just what the doctor ordered, for the casual gamer though, its a game stopper.