Well, let's see if I can answer any........
I'm NH res. and travel to and from MA. for work. For a Non-Res going to MA. you need to take a course/class by a MA certified instructor (I'm ONLY giving BRIEF info here where as you can check out the MA. section which has ALL the answers for you), these couses/classes are listed in the MA. section that are acceptable. You have to posses a LTC in your own state, fill out the MA. application and send in ALL the info it asks for along with $100. which is good for only one year. Took two months to get mine. My renewal took less.
ME., pretty much same thing as far as courses/class adding a copy of birth certificat and $60. for 4 years. Mine took about two months. For CT. I do not know.
Again, this is only a brief explanation. You can find ALL your answers on here in the home page OR check out the Threads made in MA., ME., CT.,..........it's all in there.
Yeh, I know I missed things BUT that's why I said...BRIEF info. I found out that in each State on here everyone gives a great story on their own experiences which is a good place to start. Good luck.