Here yo go:

LEGAL SERVICES free for low income, and even if you don't qualify, they will have those booklets, I am sure and probably be able to answer your questions, over the phone. They always did for me. Probably the one you want is down a bit on the list, the Community one.

Or, this one says they do landlord/tenant law, too, for free: Harvard Legal Services.

Good luck! I'll be sending you some good thoughts and energy.

kat