Try your local junior colleges. I'm sure there are many in NYC. That would be my first route. As you start to become more skilled in it, look for social meetup groups. You can check out meetup.com for local groups.
IMO, learning to read and write it properly from the beginning is important too. Early in my learning, I focused on the romanization of the language, and I've found that it became detrimental to my ability to visualize the phonetic characters in my mind. I would "see" the romanization in my head instead of the characters themselves.