I have purchased several classes - my favourites so far have been Free Motion Quilting a Sampler, which taught me free motion quilting and Quilt As You Go - Patchwork Bags which taught me how to use the quilt as you go technique, which I use all the time for bags and zip pouches, like this one:
I've also taken several of their free classes, which are well worth checking out.
Their pattern library is handy as well - indie designers can upload their free or paid patterns and you can browse to find a design you like. I bought the strawberry paper piecing pattern through Craftsy that I used to make this strawberry.
Even if you don't want to buy a class I recommend you pop over and sign up anyway - they send you newsletters with info about all their specials and sales. They have sales regularly - you should never need to pay full price for a class! The classes also make fabulous gifts for creative friends.
Disclosure - I am a member of the Craftsy affiliate program. If you purchase something from Craftsy through one of my links, I may earn a small commission. It all helps to allow me to cover the costs of running Sew Delicious. I don't recommend products or services that I don't use myself. Thanks for supporting my blog!
Have you done any Craftsy classes? Which ones do you recommend?