Do It Yourself Green Home Improvements

Do the many easy things first. Check the talk by Ed Begley Jr on low hanging items.

Passive items like using a clothes line instead of a gas or electric dryer

LED lights.

Seal leaks and add insulation.

Use solar screens to block heat in summer, remove them in winter.

Turn the thermostat down in winter and up in summer to be closer to the outside temperature. 

add a thermal barrier in the attic.

turn off and unplug electronic devices like TV's when not in use.

when replacing applicances get the smaller and more efficient energy star units, small is better.

walk, bus, car pool use the phone.

the solar stacks