If you’re not already drinking the Twilight Kool-Aid -- and have no idea if you’re on Team Edward, Team Jacob, Team Switzerland, or what that all even means -- we’ve put together a handy guide to the key players (vampire and human) you’ll see in Twilight and how they all fit in within the world first revealed on the pages of Stephenie Meyer’s addictive debut novel.

Click on the pictures below to find out more about Bella, Edward, their friends, family, and enemies, and get primed to watch the first chapter of the Twilight saga unfold onscreen. And don't forget to check out the latest trailers and photos from Twilight!