Patty's Sewing Center in San Antonio is an authorized dealer for Accuquilt. The Quilt Haus in New Braunfels is also an authorized dealer. I found these on the Accuquilt website.
I didn't look on their personal websites but they may have information about classes using the Accuquilt die system.
I have the Go! and the Go!Big. I love my Go!Big.