Okay I'm a little confused with how the GB/IC page works on geekhack. Is there a way to filter to see currently active GBs versus just seeing any post in which someone has commented on recently? I feel like all I see in group buys are updates to GBs that have ended, which is fine but irrelevant to me. I just want a 60% case
If you're just looking for something quick and easy -- take a look at kbdfans. They have a range of cases, many of which I'd highly recommend for someone just getting into the hobby.
But as far as the GB organization goes, the forum is a bit tricky. GBs aren't running at all times (or at least maybe not what you're looking for), and often times the price/product isn't a good fit for your needs. That said, the hobby is wonderfully deep -- the more you read, the more you'll get out. Feel free to ask around if you have any questions