The following websites have good information on lighting:

Lighting Design Lab provides consulting services to commercial, industrial, and large scale residential development. The information on their website is also useful for single-family homes.

The Department of Energy, Energy Efficiency & Renewable Energy website has a lot of good information about lighting; explaining principles, design, types, controls and maintenance.  This is a good website if you want to know more about the technical details of lighting.  This website also provides information about replacing ballast in fluorescent to improve on efficacy of fluorescent tubes.

Some high energy efficient lights such as compact fluorescent blubs and fluorencent tubes contain a small amount of mercury.  Although the content is significantly lower than the mercury that the electricity emits into the air to power an incandescent bulb, you should take care of the proper disposal of these bulbs and tubes.  Kitsap County Solid Waste Division is equipped to take household hazardous waste in Port Orchard.  Lamprecycle.org provides useful guidelines as to the handling of spent lightbulbs.

Daylighting

The cheapest and most energy efficient source of lighting is daylighting.  Properly designed glazing will give you free lighting that will not only enhance your pocket book but also your well-being.  Make sure that you are bringing in daylight and not glare.  It is also important to take into account for heat gain/loss with energy efficient glazing. You can learn more about day-lighting at the following websites:

The DOE, Energy Efficiency & Renewable Energy website consists general information on daylighting.

Daylighting Collaborative provides good information on daylighting particularly for large scale projects.

Seattle Daylighting Lab is in the same office with the Lighting Design Lab.  They specialize in daylighting design.