If you only want to go partially solar, look at small-scale applications for this energy source. There are two ways to do this. First, find solar panels you can mount on or at windows to recharge portable electronics. The other way is to buy camping tools like lanterns and cooking equipment that is solar powered. Every small thing that you do saves you a little money and helps the environment.
A sun tracker will increase your ability to capture solar energy. Through the tracker, your panels will constantly adjust to maintain maximum exposure to the sun. Though they cost more than fixed panels, the boost in energy production makes them worthwhile.
Overview of the power characteristic of solar panels, common MPPT algorithms, and a simple low power reference design to maximize battery charging current.