Using your Derry Stacked Crystal Orb Lamp Set is easy. First, assemble the lamps as per the instructions included. Then, insert the provided E26 LED G45 4W bulbs into the lamp sockets. You can turn the lamps on and off using the rotary switch. Place the lamps in your desired location, such as on a bedside table or a living room side table. When it comes to maintenance, always remember to disconnect the power source before cleaning. Use a soft, dry cloth to gently wipe the lamp shade and fixture. Avoid using chemicals or household cleaners as they can damage the finish. If you need to replace the bulbs, make sure to turn off the lamp and wait for it to cool down before handling. With proper care, your lamp set will last for a long time and keep adding a touch of elegance to your home.