Using this pendant light is easy. First, make sure you have a licensed electrician install it according to the instructions in the box. Once installed, you can use an E27 bulb with a maximum wattage of 60W (bulb not included). It's only for indoor use, so don't place it outside. For maintenance, you can gently wipe the shade with a soft, dry cloth. Avoid using harsh chemicals. If you have any issues within a year, you can get a replacement under the warranty.