if the emtity is from and i want to file a lawsuit in New York. Where do I file the lawsuit in New York or in Alaska?

I purchased thru a Land Contract a house in new York state for $20K. . =October 1, 2016 was the last scheduled payment =October 2nd, 2016 Seller tried to give me the unregister deed but I refused =2 weeks later I got the closing documents =I finished all the payments December 2015