What is the best football team right now?

And can someone explain to me whats going on in football right now like seasons and all of that and when is the next superbowl im clueless about football but i was seeing last time and i love watching it now i want to be in the high school footbal team cause im buff and i am fast and a lot of people tell me i should join but i dont even know how to play it HEEEELLLPPPP!!!!