The MassGIS wiki provides tutorials on using MassGIS webservices and also integrating with other tools such as MapBuilder, Google Maps and ESRI products.

While the site focuses on using MassGIS available data resources, it has some great tutorials that are applicable to all GIS folks using OGC services and ArcIMS services such as creating your own Style Layer Descriptor (SLD), geocoding , integrating other data with google maps, etc.