I'm interested in joining a caregiver support group, but I don't know what kind to join. I understand that there's open groups (people come and go, more informal, ongoing, volunteer facilitator who has been a caregiver) and closed groups (same people structured, 10 weeks or so with a professional in the field of aging/caregiving as a facilitator). The first seems more social and I'm concerned that a closed group may be too clinical, but maybe it would be more educational, too. What has been your experience with support groups? What format would you recommend?