Using this LED light bar graph display is easy. First, find a breadboard and gently plug the display into it. The 0.1' pin spacing gives you enough room to connect the necessary wires. When connecting the wires, make sure to match the right pins to avoid any short - circuits. As for powering it, follow the general guidelines for LED power requirements. Since it's a multiplexed display, you can refer to matrix tutorials to learn how to drive it properly. When not in use, store it in a dry and cool place to prevent any damage to the plastic body and the LEDs. Avoid exposing it to direct sunlight or extreme temperatures for a long time. If you notice any dirt on the diffused rectangular lenses, you can use a soft, dry cloth to gently clean them.