Using this pendant light is quite simple. First, make sure you have a licensed electrician install it according to the instructions in the box. Since the globes are not included, you'll need to buy E27 globes separately and screw them into the 3 lamp holders. The light is designed for indoor use only, so don't install it outside. The input voltage is 220 - 240V, so ensure your power supply matches. For maintenance, simply wipe the glass and iron parts with a soft, dry cloth regularly. If there are any issues within the 1 - year warranty period, you can get a replacement. Just be careful not to be misled by low - quality similar products from other suppliers.