@vonny,
If you want to know anything about NFL vonny you should find out which match is being broadcast live on Sky Sports and go down to the bookies and have £50 on one of the teams. Or £500 if you're well fixed. A sufficient amount to get you interested in every move.
A few weeks of that and you'll know the game inside out. And with average luck over a season you will only lose about 10% of your total stakes which is the bookie's fee for providing such a fast education in what is a very important social phenomenon in the culture of our most important ally.
Actually rjb's Pick Um game on the Sport threads does the trick for free. He's a good chap and I daresay he might allow you to join the game if you offer to start at .499. If he won't refer him to me. I am a member, in the loosest sense of the word, of the Pick Um Hall of Fame having won the title two years running from a standing start. It's a flawed game mind you as fm once pointed out when he was chagrined about my performance but you needn't worry your pretty little head about that.
Never write off anything that a nation is besotted with.
And think of the cachet in the pub when you can talk with authority about a matter your companions are pig-headed about. As a lady expert on NFL with a Geordie accent you could end up on TV.