There are many resources you can use in addition to hiring your own lawyer. Many court houses have a law library staffed by knowledgeable librarians that can direct you to a wide variety of highly useful material. The location of each law library can be found at Law Libraries Locations and Contact Information

The Committee for Public Counsel Services, the agency that provides attorneys for those who cannot afford them, may also be helpful in answering questions regardless of whether you are able to hire your own lawyer. Their offices and telephone numbers are listed on the following web pages: 
Committee for Public Counsel Services-District court offices
Committee for Public Counsel Services-Superior court offices

On the first Wednesday of every month the Massachusetts Bar Association (MBA-statewide association of lawyers) offers  Dial-A-Lawyer , where you can call between 5:30 p.m. and 7:30 p.m. to obtain free legal advice. (617) 338-0610.

If you need to hire a lawyer, you can find lawyer referral services at Find a Lawyer