Most everything you could want out of a players guide. It pretty much lays out all the extra powers and traits for creating a more developed character. It also gives the basics for creating other werecreatures (which I think is a bonus more for the storytellers).
If you have the first edition though, don't bother. The only difference is a hard cover.
An Excellent Werewolf Resource This book is extremely helpful, especially to new players of Werewolf: The Apocalypse. It adds a lot to the game, including a variety of new merits and flaws, extra rites and gifts, and detailed information about the changing breeds other than the garou. A must-have for any player.
This book is a MUST I am the Storyteller to our werewolf games, and my players and I consider this book a nessessity! Werewolf the apocalypse just does'nt have all the info you need. This book contains merits and flaws (a way to earn more freebie points and to spiff up your charater by making it blind, double-jointed, or have a wonderful tolerance to silver, and many more), personality archetypes so that your character may regain willpower more easily, as well as making it more fun to roleplay. An extra list of metis deformities is in this book as well as new abilities (like klaive dueling, pilot, and demolitions), gifts, backgrounds, and rites. This book also contains extended information on ALL of the tribes AND "camps", including the Ronin(if you don't have this book, you've probably never heard of it)! More information for the Storyteller on Packs, Septs, Caerns, Spirits, how to crossover different white wolf games, dueling, new combat maneuvers, aging and it's effects, and the werewolf sickness of Harano. For everyone it contains new totems, and fetishes. But best of all, this book contains all of the changing breeds (like werecats, and weresnakes) except for the werefoxes! This seriously saves you much money if your players insist on being a weredragon!
More info than Werewolf itself If you bought Werewolf: the Apocolypse, liked it, and want to start playing the game like a REAL MAN, then you have to buy this book. It has information than the Werewolf core rulebook. And it introduces you to each of the awesome Changing Breeds. Get the damn book.
excellent gaming for "realistic" role players, excelent art, and an even more impressive storyline to go with, white wolf publishing combines (successfuly at that) real world concerns, environmental and the like, with the fantastic mythos (old world and original) regarding the werewolves.