How can I effectively choose and install energy-efficient lights for rooms in my home?

To effectively choose and install energy-efficient lights for rooms in your home, consider LED or CFL bulbs, which use less energy and last longer than traditional incandescent bulbs. Look for bulbs with the ENERGY STAR label for quality assurance. When installing, make sure to match the bulb's wattage to the fixture's recommended wattage to avoid overheating. Additionally, consider using dimmer switches or timers to further save energy.