well if you want to follow your teams and you love keeping up to date then you must go to twitter and facebook. I follow sorts of teams and leagues of all kinds on twitter and I can also talk a little smack to friends on twitter and FB while watching games. Its always fun to see what other are saying about games and tv you are watching. Most hockey, baseball, basketball, auto racing leauges as well as off sports like rugby and soccer have twitter accounts. The NFL of course being the stodgy old league frowns on twitter for players and no tweeting during the games. Now the NFL has a twitter and the NFL network has one so you still get updates.
give it a try and see how much fun it can be.