Watch redzone if you think football is slow. It's like the Jeff stelling 3pm show, but they actually cut to and stay with live games when a team is likely to score (you just watch the games, there are no visible presenters). It's far from slow as you are following all the games at the same time. And watching a real game is not that slow normally, first half in particular. The drama of a real game can be incredible- the Minneapolis miracle and the patriots recovery in the super bowl a few years ago are two games that were just amazing to watch.
I quite like the BBC coverage too and is set at an audience with a limited understanding which suits me fine, so give that a go too.
I personally find NFL to be the best spectator sport for the neutral, there is just so much to enjoy about it. Or watch one of the Amazon documentaries where they follow a team for a season. The cardinals one about 4 years ago was great and it will mean you will at least know something about some of the players in the league.