If you can make it, do go to a game. Everyone is nice (so long as you call your hits), I'm sure you'll get to hold and fire a few AEGs, and you don't even have to play (I don't see why you wouldn't though). You can go and just get the feel and atmosphere of the games, which is generally a good time.
If you're like me and live too far from any respectable game then research my good friend. ASC forums are a good place to learn alot (I wish I'd found them sooner). There is an extensive reviews section (
http://www.airsoftcanada.com/forumdisplay.php?f=17) which is not only used to review guns, but Canadian Retailers, accessories and anything airsoft. As well there is a long term durability review thread (
http://www.airsoftcanada.com/showthread.php?t=36977) which is helpful in providing a bit of a look into the future of what problems you
might encounter, if any(ofcourse, this is hard to judge since every one treats their gun differently, some to more care of it, some take less, but it's good information to know). And just in general, there is all sorts of information floating around here, and on many other sites across the intraweb. Arnies Airsoft (
http://www.arniesairsoft.co.uk/), Hatchet's Guide to Airsoft (
http://www.tea-and-medals.co.uk/), and a series of others (you can find alot of UK based sites. They love their Airsoft). Just use google.