Using these candles is easy. First, make sure the included CR2032 battery is inserted correctly. Then, simply turn on the on/off switch at the bottom of the candle to enjoy the warm white flickering light. These candles are great for adding a cozy atmosphere to your home, weddings, churches, restaurants, or any event. When not in use, turn them off to save battery life. Keep them away from children and pets as they are made of plastic. To maintain them, just wipe them gently with a dry cloth if they get dirty. Note that only the bubble candles are included, so you'll need to get your own decorative accessories if you want to dress them up.