Using this mason jar light is easy. First, place the special paper inside the 16 - oz mason jar. Then, thread the light string through the jar. Remember, you'll need to provide your own batteries for the light string. Once the lights are on, enjoy the warm starlights that fill the room. As for maintenance, keep the jar away from sharp objects to avoid scratches. You can clean it with a soft, damp cloth. When not in use, store it in a cool, dry place. Always handle the glass jar with care to prevent breakage.