Before purchasing any solar panels, make sure they are government certified. This may seem like a small deal, but it really affects your bottom line. Many of the government rebate programs require that your solar panels are government certified. If they aren't, you'll be missing out on some of the cash back opportunities out there for you.
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Don't look at solar panels as a do it yourself project. You are putting serious funds into these panels, and any mistake can be very costly. Find the right help. Do your research online to come up with the best installers out there near you and interview a few before making any decisions.
Make sure to watch the light on your solar panel inverter regularly. Check it at least a couple of times a week, while sunlight is hitting your panels. The light should be green. If it is not, your panels might not be working correctly, and it is time to call in a technician.