One of my former Artfest instructors, Misty Mawn, is offering an online mixed media class called Full Circle. It will include 12 weeks of instruction with online postings three times a week.
Misty is such a creative, fun and inspirational teacher. I've taken several classes from her and the art I create in those classes are some of my favorite pieces. She is very encouraging and helps you to find your own voice. I've never taken an online class before but I feel Misty's class would be a good introduction to this venue.