Using this pendant light is simple. First, have a licensed electrician install it according to the instructions in the box. It's only for indoor use, so don't place it outside. When choosing a light bulb, make sure it's an E27 type and doesn't exceed 72W. As for maintenance, you can gently clean the glass part with a soft, dry cloth. If there are any issues within one year, you can get a replacement. Also, be careful not to be misled by inferior - quality similar products from other suppliers.