Now that I think about it, the last book I read was Bloody Confused by Chuck Culpepper. It's about an American sportswriter who moves to London and discovers football. It totally struck a chord with me as lots of the stuff he thought was confusing or weird, I also thought was confusing or weird when I was first learning about the Premier League. I loved his depiction of how dedicated the supporters are. And (having never been to a Premier League match -- yet -- sigh), I learned a lot from the book, too. Most people here will probably know this stuff already, but it was a really funny read and I would recommend it.
In the UK it's titled 'Up Pompey,' guess they figured we Americans would not understand what that meant, ha. (The author looks at a bunch of teams before deciding to support Portsmouth.. I feel kind of bad for him right now.)