Using this mason jar light is easy. First, insert the light string into the mason jar. Then, place the special paper inside to create the starlights. Since the battery is not included, you'll need to get your own batteries to power the light string. When using, keep it away from water to prevent any damage to the light string. For maintenance, simply wipe the glass jar with a soft, dry cloth to keep it clean. Don't try to disassemble the light string on your own as it may cause it to malfunction.