Using this wall light is easy. First, find a suitable place on the wall to install it. Since the battery is not included, you'll need to provide your own. Once installed, the infrared sensor will detect movement and turn on the light. You can switch between the RGB colors to create different moods. As for maintenance, keep the light dry because it's waterproof but still needs to avoid excessive moisture. If there's dust on the lamp, use a soft cloth to gently wipe it. Also, replace the battery when it runs out to keep the light working properly.