Using this ETC Source Four Jr ellipsoidal light is easy. First, find a suitable location on the stage to install it. Attach the light securely using the C - clamp. Then, plug the stage pin plug into a proper power source. When it comes to the bulb, make sure it's properly seated in the fixture. For maintenance, keep the light clean by gently wiping it with a soft, dry cloth. Avoid using abrasive materials that could scratch the surface. Also, check the bulb regularly for any signs of damage and replace it if necessary. Remember to turn off the power before any maintenance work to ensure your safety.