Just tossing another option out there. North of Boston the local tech High School has adult autobody night school. The class is $300 for 10 4hr sessions not including materials, a lot of the guys sign up for both the Tues and Thursday night classes. In General it's just open shop night if you have a question the instructors are there to answer them. Most of the folks who go drive their project cars to the shop and work on them, or as I did bring in one fender at a time. The school I went to a few years ago has two paint booths available, The instructors will help mix the paint and show you how to spray it. It was always a good idea to bring your own tools, and get there early to grab a working mig welder. Many years ago late 90s my wife dropped off an old car there and had the students do it... six weeks later we got the car back with a decent paint job and a few missing grill clips, but the kids have to learn somewhere. After going thru a tech school auto body program down in Maryland my 21 year old niece is head painter at a dealership. I'm considering flying her up to Boston to paint my truck when it is ready.