You know you want to make your home more energy-efficient, but you've been dragging your feet because, well, where exactly to start?
The best first step is to figure out what you're working with by conducting a home energy audit. Basically, you want to know how much energy you're currently using and where you're using it, in order to know where to take action. Are the windows really drafty? Are you using Energy Star-approved appliances? Do you only vaguely remember your vents being cleaned once, years ago?
You can choose to have a professional go through your home for you, or the audit can be done pretty easily by yourself.