Always use non abrasive cleansers on your solar panels. An abrasive cleaner can scratch the surface of the panel and cause permanent damage and affect how well the solar panel works. There are commercial cleaning solutions to use or you can use a pool skimmer with a very soft cloth on it.
Carbon based pollution will be tremendously reduced when cars that are powered by the sun become widely available. But, there are other devices that work well on solar energy. Solar powered generators can be purchased, and are a great source of energy in emergencies.
Explains how the Solar-Estimate online solar system calculator works and shows you how to save on your electricity costs.
Try to choose solar panels that can have their angles adjusted easily. The angle at which the sun hits the Earth changes throughout the year. This means that the best angle to catch the suns rays can be very different between summer and winter. Ideally you want to at least be able to adjust the angle of your panels twice a year, however if you can find some that allow adjustments four times a year (spring, summer, fall, winter) that is even better.