Fantastic book - would recommend it to anyone. Explains to non-football fans all the little things that we love, and that bond us to other fans. Also doesn't really apply to armchair fans, it's pretty much all about those moments you get from actually going to the games.
The game itself - phenomenal, lightyears ahead of where it was a few decades ago.
A lot of the stuff around it - some bits better, but most worse than it used to be.