The Ubuntu Local Community Team is focused on Free Software advocacy in NH. Some Ubuntu users are not ready to participate enthusiastically in a grass-roots promotion effort. Instead, you may be seeking a casual user group focused on general Ubuntu usage. There are, in fact, many such Linux user groups in the area. With a little driving, you could even attend a half-dozen meetings every month. Here are the details on where to find these groups.
GNHLUG provides the information and the event scheduling on the four Linux-interest clubs in New Hampshire and on three programming-interest clubs.
The Boston Linux and Unix user group holds large, monthly events at MIT. They have a long history, since they started out as the venerable Boston Computer Society.