Estate planning lawyer and mom to two boys. My older son liked audiobooks as an infant, and I've listened to a lot since then.
Overall, I thought highly of the book. I bought it for my teen and tween sons who've recently gotten interested in watching football with me. They have very little overall knowledge of the game and I think they got a lot out of it, though they said they did have trouble paying attention at times (and they are die hard audiobook listeners). I got it on the Daily Deal and at that price it is hard to go wrong.
I did have two negatives about it. For me, a long time (but not serious) fan, it didn't do much to help me with all the questions I have when watching the game, so I'm not sure someone like me is the target audience. More importantly, I don't think this is the best medium to learn how to follow a football game. Watching a game with commentary -- or watching the pregame show for the Superbowl right now -- does more to explain what is going on, since it comes with visuals.
In sum, I think this book works best for a near novice, who wants to listen something to understand the basics when not watching a game. For a person who doesn't want to interrupt the fans in their life with dumb questions, this might be perfect.