Check out this segment on Laramie Rosenfeld training new sign spinners in Phoenix by Arizona Storytellers.
Laramie, World Sign Spinning Champion of 2011, started off as a sign spinner and is now a SPINstructor himself who teaches new sign spinners basics and tricks.
Watch the video here: http://www.azcentral.com/storytellers/video.php?vid=1127728940001&tcat=st-work