Using these female stacking headers is easy. First, take your Feather board. Then, insert the 12 - pin and 16 - pin headers through the appropriate holes on the Feather. After that, you can plug the headers into a solderless breadboard to start building your circuit right away. You can also attach other circuits on top for more complex setups. Remember, the Feather boards are not included in this package. When it comes to maintenance, keep the headers in a dry place. Avoid bending the pins, as it might affect their connection. If you notice any dirt or debris on the pins, you can gently clean them with a soft brush.