Turn off all appliances. When not using appliances in your home, make it a habit to turn them off when not in use. Items such as televisions, computers, and lights should all be off so you can prevent unwanted energy use. Not only is this good for using less energy, your electric bill will be much less too!
This introductory video about the process a home builder can go through to build a more energy efficient home with the use of a Certified Energy Advisor.
Make full use of ceiling fans between November and March. Switch them to go clockwise and they will help push the warm air down, reducing demands on your heating fixture. Running the heater less frequently will more than compensate for any electricity used by the fan.