I would take classes in a heartbeat but we have limited bandwidth (rural area). When we get unlimited cable I'll be taking several.
I learned to quilt in the 1980 by renting VHS videos (20 years before Netflix) from Sewing with Nancy. It was $5 a video and she sent them with a package to send back. She offered Eleanor Burns videos. Best $5 I ever spent. Taught my daughters to sew with them too.