Using this ETC Source Four ellipsoidal light is easy. First, connect the stage pin plug to a proper power source. Then, install the included bulb into the fixture. When positioning the light, keep in mind that it has a 19 - degree angle which can be adjusted to fit your stage setup. As for maintenance, regularly check the bulb for any signs of damage or dimming. Replace it if necessary. Also, keep the fixture clean by gently wiping it with a dry cloth. Be careful not to use any harsh chemicals as they may damage the surface. And remember, since it doesn't come with a C - clamp, you'll need to use your own if you want to mount it in a specific way.