What is the best way to hang glass kitchen cabinets?

You should remove the glass doors when hanging glass kitchen cabinets to prevent accidental damage. Measure the point where the bottom edge of the cabinets should hit. Use a level to draw a straight line across the marks. You can then attach a board flush with that line to rest the cabinets on during installation if you desire. Locate and mark the wall studs. Then, have your helper hold the cabinets in place, either by hand or with the bottom resting on the ledge that you created. Drill two pilot holes through the braces for each cabinet into the wall studs and attach the cabinets with wood screws. Reattach the glass doors.