Step1. Put 2 corners from the open side first (IMPORTATNT!!!) Step 2. Lay down the iPad then snap in the other 2 corners UNTIL you hear a “Click” sound. Note that please use two fingers to snap the other two corners in as they fit very tightly to avoid iPad to slide out. For installation video instruction, please follow our video @ http://youtu.be/F2yxdDzsq6w