WWE's first pay-per-view of 2012 is tonight, as the 25th edition of the Royal Rumble takes place in St. Louis. Unlike past Rumble events, this year's edition is completely unpredictable. Only four matches are scheduled for the card, but all four have a large importance to the landscape of WWE.

John Cena may potentially "embrace the hate" when he squares off with Kane tonight. World Heavyweight Champion Daniel Bryan will attempt to win a cage match over the two behemoth challengers of Big Show and Mark Henry. Bryan hopes to continue his improbable run with his first world title in WWE.

Speaking of world titles, CM Punk defends his WWE Championship against Dolph Ziggler, who is running a hot streak right now. Will Ziggler leave St. Louis as champion or will Punk overcome John Laurinitis as special guest referee and retain his title?

Most importantly in the Royal Rumble is the match derived of the same name. The Royal Rumble match features 30 superstars with the last man standing in the ring gaining a world title opportunity at WrestleMania XXVIII. This year, every superstar can appear in the Rumble, which can lead to insanity and craziness that has been almost unheard of in recent years.

So, how can you sort through all of the information about Royal Rumble? Consider this your cheat sheet. This article is complete with previews, analysis, predictions, as well as links to other great articles around the site. Keep it here for everything you need to know before the 2012 Royal Rumble.