The websites that give you tutorials just get all worked up about how if you really screw up while cleaning your camera, you're going to damage your CCD. Replacing a CCD is very expensive, but from my experience you would really have to try to screw up your sensor to actually do it, especially if you watch or read any tutorials on how to do it at all.
The Arctic Butterfly sensor cleaning brush is ridiculously expensive. I had a trusted source recommend it, but after looking at it, it's really just a glorified brush with a motor used to shake off the dust. But I went with Sensor Sweep which is the brush you see in the tube above.
Something most important to remember with these brushes is that you should Never touch the bristles. Doing so greases it up with your filthy finger crisco and could mean transferring said grease on your sensor. Using either the Giotto Rocket-Air blower (seen below) or a pressurized can of air is supposed to statically charge the bristles of the brush and therefore make it easier to extract the dust from your sensor while clearing it of any dust on the bristles. This is the dry method of cleaning.
When using a pressurized source of air DO NOT use those small CO2 cartridges used in pneumatic powered guns. That type of cartridge usually has a little oil in it that is supposed to lubricate the inside of the guns that use them. Using one of those types of compressed air adapters that fit onto those cartridges for your camera could mean a gunked up sensor. Bad mojo. Using canned air the wrong way could blow frozen CO2 on your sensor. That's why I like the squeeze bulb shown above.
The wet method of cleaning uses the Pec Pads, the plastic and rubber wand, rubber bands and highly flammable methanol. The reason for the methanol is to be sure that it evaporates from the sensor. The reason for wet cleaning is to get any "welded dust" off the sensor. Basically that means that somehow moisture and dust came together on the sensor and sort of glued the dust to the sensor. Blowing into the sensor area with your mouth is a good way to make this happen, even if you manage not to spit, you're still blowing moisture from your lungs into the camera.
That's the basics. Just be careful. And don't say I didn't warn you, making mistakes could cost you a camera. Now go wash your hands!
