Do I need a License to be a Hard Money lender in Massachusetts? If yes,
what’s the name of the license?
NationwideLicensingSystem
What type of attorney would I contact?
You need an attorney with many private lending clients. Not just a real estate attorney. Go to the registry, look up some private mortgages, and some times on the discharge there is a "Return to" field, which would be the attorney. Although with electronic filing, there will be very few with this field. Alternatively, call some of the larger hard money companies and ask them for the name of their attorney. They might give it to you.
what department of Massachusetts would I call?
See link for NMLS above
can anyone send me a link that pin points exactly what I need to do to become a lender?
You will find that while the link gives you specifics, it's the questions you didn't ask that are more important. Find yourself a good attorney. The reason that a real estate attorney is not enough, is the attorneys who handle closings for institutional lenders only know how to close the deal, and are typically provided loan docs by the institution, because they have attorneys on staff to ensure compliance. Real estate attorneys usually know nothing about lending compliance.
I'm assuming that by 3-4 deals, you have over 1 million available for lending. In general, in MA, if you don't have at least a million to lend (aside from your other assets toward retirement, housing, etc) then you don't have enough to lend. All that networking and marketing, and then you are suddenly out of money. Then you are telling all those people "oops, sorry, I can't do that deal right now." Part of the reason to use a private lender is speed to close.
You may want to consider finding 1 flipper or buy and hold investor you trust, and partnering solely with that person. You two together can grow your portfolio significantly without spending time marketing for new borrowers. Just an alternative to consider.