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, screw in an E27 bulb (not included) up to a maximum of 72W. It's for indoor use only, so don't place it outside. For maintenance, simply turn off the power and wipe the iron shade with a dry cloth. If there are any issues within the first year, you can get a replacement. Just be careful not to be misled by similar but lower - quality products from other suppliers.