I think I want to be a singer...?

What steps should I take into doing that? I am 15 and I live like midtown nyc. I have just always LOVED music and music can always exaggerate my emotions and I don't want to be a B.S signer like miley cyrus or something...i want to be honest, and not have to work under any guidelines. What can I do? I want to do sort of pop-ish sort of, I like lady gaga music and stuff and shes honest and I just love her. Do I need to learn how to play the piano? What should I do?