Most World of Warcraft players say they don`t need books because they know the whole game. Those people should be ashamed because most of them look up tactics on the internet.
The other way is to buy a few very good books and read them in your spare time (like when WoW is down, or you have square eyes)
The books I recommend;
World of Warcraft: Wrath of the Lich King Official Strategy Guide (Bradygames Official Stragey Guide)
World of Warcraft: The Burning Crusade Official Strategy Guide (World of Warcraft)
World of Warcraft Master Guide, Second Edition
World of Warcraft Dungeon Companion
World of WarCraft Dungeon Companion, Volume 2 (Official Strategy Guides (Bradygames))
World of Warcraft Atlas, Second Edition
World of Warcraft Atlas: The Burning Crusade (Brady Games – World of Warcraft)
