Using these jumper wires is easy. First, identify the female header on your board, like an Arduino. Then, connect the male end of the jumper wire to the female header. If you need multiple connections, you can place the jumpers next to each other on the 0.1-inch header. When using with breadboards or other prototyping boards, just insert the appropriate ends into the holes. As for maintenance, keep the wires in a dry place to avoid damage. Don't pull on the wires too hard to prevent the connectors from coming off. And that's it! Enjoy using these handy jumper wires for all your electronic projects.