I signed up last Wednesday and decided to wait until Monday to begin the course. I'm enjoying it immensely. I have played guitar for years, but I never have felt that I knew how the guitar "worked." I am retired and have plenty of time to play, so I'm doing the 30-day Challenge and the Daily Challenge and am loving it so far. It's fun to be able to play stuff right off rather than going through weeks of endless exercises and finger drills.