Bellingham YMCA often offers clinics for both beginning and advanced pickleball in weekly sessions of 8-16 people in their gym.
Contact: Downtown Bellingham YMCA
More info: whatcomymca.org
The Birch Bay activity center (part of Birch Bay Blaine Park and Rec) periodically offers beginning and intermediate pickleball orientation classes running weekly, clinics and tournaments. Most of the instruction is indoors in the gym.
Contact: Birch Bay Activity Center.
More info: bbbparkandrec.org