Where should i sell these 3 games i have?

You could try to sell them on your Local Craigslist. (www.craigslist.org) or bring them to a local GameStop/EB Games/PlayNTrade and trade them in. You would get more from people on Craigslist unless you are just going to buy more games then you could just trade them in at GameStop/EB Games/PlayNTrade. If you go to Gamestop.com you can locate a local store. Pawn Shops might be only option for you as well.