There's plenty of good sites, but it depends on the type of game you want and whether or not you're brave enough to tackle the latest version of the code to make them. I've been self-training for months in ActionScript 3.0, and in some cases, 2 is still easier to handle.
Personally, I've been reading books on the basics of Actionscript 3, some of which include games in their lessons. Usually, sites are geared toward types of games. For instance, if you look up a shooting game, you'll probably come up with sites that have them and sites that tell you how to make them. I'd say try a local library before digging around online.
This is where my games reside: [link]
Although, I think the post you might've been looking at had to do with interactive comics, not games. In any case, and trust me on this one, Actionscript is a pain in the rear to debug.
I wouldn't say I'm qualified to teach everything (as I'm still teaching myself) but I do know the basics pretty well. I know how it is with schools that teach Flash - they don't like teaching the code because it's known to be a pain in the neck. I've had three classes in Flash and neither of the two teachers (the first one I took a second time for fun and practice) wanted to teach the code. The first repeatedly cursed it. Dunno how good I'd be at distance teaching, but I'd give it a shot if asked.