From the back of the book:
Secrets Every Hero Should Know
What does an elf from Shae Cairdal know about the nation of Aerenal? How do you play a half-orc from the Shadow Marches? What does your character know about the Blood of Vol or the royal line of Galifar? The Player's Guide to Eberron supplement answers these questions and more. This companion to the Eberron Campaign Setting explores the world from the player's point of view and presents exciting new options for Eberron characters.
Player's Guide to Eberron describes important locations, events, organizations, races, and features of the Eberron campaign setting, organized in an accessible and easily digestible format so that players can use the book as a handy reference guide. In addition, this book provides new feats, prestige classes, spells, and magic items.