BradyGames' World of Warcraft: The Burning Crusade Official Strategy Guide includes the following:

• New Races: Complete coverage of the blood elves and draenei. From their strengths to their starting zones, nothing is left in the dark.
• New Weapons: Discover the awesome battery of weapons and armor at your disposal, with detailed lists of the Superior, Epic, and Legendary items found in the darkest reaches of this new world.
• Hellfire Explored: Take a guided tour through the first Outland World Dungeon -- Hellfire Citadel. Know what quests lead there, what bosses reside there, and what treasures you will find there.
• Outland Revealed: Every zone is laid open before you. We take you through it all in quest-based, easy-to-use modules.
• New PvP System: Learn what to expect from the new world PvP and Arena systems. Understand the unique goals and rewards of each new PvP zone.
• Complete Crafting Coverage: Every recipe for every crafting profession. From 1 to 400, it’s all covered.
  New Comics: Exclusive new World of Warcraft comics from Penny Arcade.