An excellent exercise to improve your edges. The object is to 10 & 2 (pretend your feet are pointing at the 10 and 2 on a clock) and ride your inside edges 270 - 360 degrees around the stick before opening up and advancing to the next level.
Start slowly, and work to ride the edge as LONG as possible. Alternate directions (counterclockwise /clockwise) at each level. Once you get comfortable without a puck, add in a puck.