Using this personalized memorial light box is easy. First, find a nice spot for it on your table or desk. You can use it with your desktop computer, laptop, or a power bank that has a USB input since it doesn't come with a wall charger. Just plug it in and use the switch to turn it on or off and adjust the brightness. Remember, because it's manually measured, there might be a small difference in size, about 0.5 - 1 inch. Keep it away from water as it has acrylic and LED parts. If it gets dirty, you can gently wipe it with a soft, dry cloth. That's all you need to know to enjoy this special light box and cherish the memories of your pets.