I was pokin' around SolarGary's site some more this morning and ran across this free e-book on solar passive concepts. I've been through 2 chapters and already have seen several ideas that will help me heat this winter and cool during the upcoming (hot as usual) summer.
Some of these ideas, with slight modifications, can be useful in both seasons.
Download it here:
Passive Solar Energy -- The Homeowner's Guide to Natural Heating and Cooling