An introduction to Geographic Information Systems (GIS) and the Massachusetts Geographic Information System, MassGIS.
Another educational web site. Besides useful instruction, his site includes useful information and a tutorial using software you can download for free.
A comprehensive source of information and advice on all aspects of geographic information systems (GIS). Learn what GIS is and can do for you, try it for yourself, find resources for building a GIS, and get the latest news affecting the GIS industry.