I, too, took a bind class that I have found invaluable. Mind you, I still forget things. But it was a great class. Also did a class on paper piecing that was great. I just couldn't 'get it' reading things so having the hands on class was perfect. For that I haven't 'forgotten' anything! Those are the only classes I've taken at all. The rest of my quilting is all self-taught. Including hand quilting. But that would probably be another valuable class.