How to Play Football?

okay so i want to learn how to play football not that im going to be on a team but i want to understand the game and understand it on t.v. and stuff and i want to play with my cousin in the park it looks like fun and i want to learn im really motivated to learn….so please HELP!!!!!

Suggestion:

http://en.wikipedia.org/wiki/American_football http://en.wikipedia.org/wiki/Nfl http://en.wikipedia.org/wiki/American_football_positions http://www.nfl.com/rulebook/beginnersguidetofootball HOPE THIS HELPS
U MAY GET TIRED OF READING BUT U WILL KNOW A LOT OF FOOTBALL