It's easier to start building with solar in mind than to retrofit existing. One of the things solar has trouble with are large turn-on load appliances - well pumps, refrigerators etc etc. If you know you are going solar, it pays to buy appliances which are designed for the use (or are designed to run 12v). Unfortunately, those tend to be expensive. Also if you are designing from scratch you get a chance to work on sun angles and passive solar, which helps a ton. Our house is passive solar, radiant floor heat and solar thermal panels for domestic hot water (probably soon to run the floors as well) and even when it's down in the teens and single digits in the winter, if the sun is out we don't need any other heat during the day.
My best recommendation would be Home Power magazine - you can subscribe on-line or most likely find it at your local library. They are good about featuring a range of projects, not just the "here, throw money at the system" type things.
I usually go on a couple of the solar/green homes tours in the state, and frequently you see someone with far more money than sense, where instead of doing all the things like insulating and replacing windows, etc, they just looked at their electric bill and sized a system to run that. Really not the way to go, there are a tion f things to do first.