By Freida Michael You have never really been into football before. Lately though, with the games that you have seen and the craze that they create every time it is the season for the Super Bowl, you seem to have found it interesting enough. Needless to say, you have decided that this might actually be a good passion for you to pursue. Now, weekends will be more fun when there is a game on. There are definitely some things that you're going to have to learn about this game. For instance, you have to learn about nfl defensive rankings and their significance to the winning percentage of your...