no catch on the craftsy classes. they are great to deal with. even if you pay for a class and are not happy, they will refund you. i had to use google chrome to get the video to work properly, but they were very helpful getting me up and running, and they did offer me a refund when i was having trouble. i've taken a few freebies and paid for a few also. i have not been disappointed in any of the ones i took.