Shatter is my favorite system in After Effects. It is hard to understand. You need a few hours to grasp how it works and then how to make adjustments that will give you results you expect or desire.
this will tkae you to a round up of simple to advanced training for Shatter:
Try this link which will take you to Brian Maffitt's original Total Evolution videos for Shatter:
Try to have fun, Shatter is frustrating and cool.