Using these Metal Ball Tactile Buttons is easy. First, decide if you'll use them on a PCB or a solderless breadboard. If it's a PCB, you can solder the buttons in place. For a solderless breadboard, just insert the pins. When you press the button, you'll notice it clicks and the pins, which are normally open, close for a short time. As for maintenance, keep them clean and dry. Avoid getting them wet or exposing them to extreme temperatures. If you want to store them, just keep them in a safe place. These buttons are a handy addition to your projects, so always have them around.