[neverending]

Well, asking what magazine to sell it to is a hard question to answer because we know nothing about your story. A market that buys splatterpunk fiction is not going to be interested in your new paranormal romance.

These days magazine and anthology markets a pretty much the same. Good resources for finding market sources are:

http://www.duotrope.com

http://www.ralan.com

I use those daily, but in actuality, every sale I've made has been from a facebook contact.

Both specialize in the speculative ficrion market. As to what rights you will retain for placing your story for the secondary market, it varies from publisher to publisher, so be sure to read their submission guidelines carefully.

Good luck.