Poker Rules for Beginners and Official Poker Rules at PokerListings.com
This sight gives the basic rules of the different versions of poker. Give it a read and then start playing in "play money" games online. Experience is the best teacher. Its really not that hard to pick up once you start playing. Good luck.
And btw, why am I the first person to reply to this despite all the other people that read the thread? Nobody has time to help out a newcomer?