Using these candles is a breeze. First, make sure the 1x CR2032 battery is properly installed. Then, simply flip the on/off switch at the bottom to turn on the warm white flickering light. These candles are perfect for creating a cozy atmosphere at home, or adding a touch of elegance to weddings, churches, restaurants, and events. Remember, this item only includes the bubble candles, so you'll need to get any decorative accessories separately. Since they are flameless, there's no risk of fire, making them safe to use. When it comes to maintenance, keep them in a dry place. If the battery runs out, replace it with a new CR2032 battery. They are non-toxic, so you don't have to worry about any harmful substances. Enjoy using these lovely candles to light up your special moments!