In addition to the BPC-sponsored skill-development sessions (view calendar here), here are some places near Bellingham where lessons are offered.
Locker Room East
5610 Barrett Road, Ferndale
Bellingham YMCA often offers clinics for a variety of levels in periodic weekly sessions of 8-16 people in their gym.
Birch Bay Activity Center
The Birch Bay activity center (part of Birch Bay Blaine Park and Rec) periodically offers classes, clinics and tournaments for a variety of levels. Most of the instruction is indoors in the gym.