Turn off all the lights every time you leave the room.
Shut down the computer when you are done using it.
Unplug electronics like cell phones, video game consoles, and televisions when not in use.
Set your thermostat to 78 in the summer and 68 in the winter.
Don't hold the refrigerator door open for long periods of time.
Check windows and doors for air leaks.
Replace incandescent light bulbs with energy efficient CFL light bulbs.