Using this LED memorial candle is a breeze. First, open the battery compartment at the bottom of the candle and insert three AAA batteries. Once the batteries are in place, turn on the switch, and you'll see the lovely faux flickering LED flame light up. Place it in any spot you like, such as on a mantel, a bedside table, or at a memorial area. As for precautions, keep it out of reach of small children to avoid any accidental swallowing of the batteries. When it comes to maintenance, if the light starts to dim, simply replace the batteries. You can use a soft, dry cloth to wipe the surface of the candle occasionally to keep it looking clean and new.