Plug the electric can opener into an outlet.
Lift up the silver lever that raises the cutting wheel into the air. Place the lip of the can under the wheel. Then bring the lever down and press hard enough to make the wheel insert into the can.
Press the On button while holding the bottom of the can and it will automatically turn as the wheel slices through the can lid.
Remove the can from the opener when it reaches the end and you feel a slight drop of the can. The lid will remain attached to the magnet on the opener and the can is ready to dump.