http://www.archerytalk.com has a great classifieds section for used equipment. I'd check their classifieds along with HuntingNet's. Also check Ebay and maybe your local pawn shops.

Head out to your local proshop and have them help you with your drawlength and finging a weight you're comfortable shooting. It would be a big pain to purchase a bow that is a bit too long and a little more than you're comfortable shooting.

Archery shoots at a gun club? Seems like an oxymoron...

Good luck.