There are many web sites which link to helpful collections of GIS information such as map libraries, tutorials and research institutions.
Massachusetts Geographic Information Council
Provides monthly presentations from September to May with presentations by geographic information professionals. "The council serves as the primary forum promoting the sharing of high quality geographic information concerning the physical, social, and economic environment of Massachusetts by state, federal, and local governments and the private sector "
Association for Geographic Information
Events, news, resources and special interest groups.