WoW Insider makes it simple.
Coming back to WoW after a break This article hits all the basics: Should you start now or wait for the expansion? Will you be at a disadvantage if you're not in game "getting ready" right now? What's changed since X date? What's important right now in today's game?
What's important about Cataclysm? Get a good grasp of key changes and new content in the upcoming expansion.
Cataclysm: The inside scoop Here's our reference page where we constantly update you with everything you need to know about World of Warcraft: Cataclysm.
Click onward for more answers you can sink your teeth into.