Using this pendant light is easy. First, make sure you have a licensed electrician install it following the instructions in the box. Once installed, you can screw in an E27 bulb (not included) up to 72W. This light is only for indoor use, so don't place it outside. To keep it looking great, simply wipe the shade gently with a soft, dry cloth every few weeks. If there are any issues within the 1-year warranty period, contact us for a replacement. And remember, don't get confused by those low - quality similar products from other suppliers.