Hi
@SnowSeeker! I have not attended the festival, but I am sure it is well-worth going.
Another place to gain new skills is the Appalachian Mountain Club. I'm a member of the Boston chapter ski committee, and we run a backcountry workshop, which is at Pinkham Notch this year. (I used to teach at the workshop.) Other chapters also run different backcountry workshops (specifically New Hampshire). (The club is organized into regional chapters, but all the trips are listed together on the main website Ourdoors.org.) The NH chapter in particular has a lot of BC trips. More info here:
https://activities.outdoors.org/search/?act=18 You do not need to be a member to attend.
I WAS a member of the BCTNE Facebook group, but quit after getting into it with some members over revealing stashes. I was probably too strident, but I did find it to be a bit of a sausage fest. YMMV. Definitely don't take my experience as any dis on the group--they may have changed since I quit--the guy who runs the site was very cool. I'd just had enough.
Hope this helps!