If you post your email / contact info on your profile, I can reach out with some ideas. I work in NYC and happy to connect you with people depending on your interest areas / skillset.

Updated my profile to contain my email. Thanks!

you need to put it in the "about" field, the "email" field is just for password reset emails etc and not public.

Either through your network or do some freelancing. If you go the freelancing route you'll have the extra benefit of having a relatively straightforward way of developing other business skills you'll need like sales. Just be sure not to let it take up all your time if you're going for a different business model :)