The British/European football experience

[Hostile Dialect]

As an American fan of sports in general and (among others) soccer in particular, I'm curious about the experience of going to the games over on the other side of the pond.

So, European Dopers (that means you, Brits! although I'm just as curious about other European football scenes as well):

How often do you go to the games?
How much does it cost to get a decent seat?
How much does food and drink cost at the games?
Can you bring your own food and drink? (Both from a 'following the rules' standpoint and from a practical standpoint--that is: is it allowed, and if not can you get away with it?)
How many people do you know who go to the games?
How many people do you know who follow the sport?
Do you go with your SO, your buddies, yourself, or a big traveling crew?
Do you follow your team around to other stadiums? Do you know a lot of people who do?
Is there a significant college footy scene in your country, and do you or anyone you know go to the games?
How much influence does college football have on the professional leagues? That is, do the professional players come from the college ranks like here in America, or do people work their way up through club teams etc.?