Just yesterday I bought myself a gift, it was the "Beyond Basic Machine Quilting" class by Craftsy. Ann Peterson is the instructor for this class. I have 'watched' some of it while I was sewing strips and pressing. She does talk about thread, tension, fmq foot, work surface, how to sandwich, just info to be setup correctly. In this class you do a wall hanging (could be made bigger after into quilt size) and it looks really complicated but Ann really breaks it down into basic steps and she goes right though all the quilting with you, What I like is I can watch this over and over as many times as I need until Im really good at it. It is all done at your own pace. If I have question, I just post it right beside the video and Ann will personally respond with an answer.
Im really excited to start with class and with Ann's support whenever I need it, I can't go wrong! She also has a class about how to quilt a king size on a dsm, might have to get that one next!