Using this cable is easy. First, find the connector on your Raspberry Pi. Be careful when opening it as it's quite delicate. Then, take your new 100mm cable and slip it into the connector. Make sure it's properly seated. When handling the cable, avoid bending it too sharply as it can damage the internal wires. To maintain the cable, keep it clean and free from dust. If you're not using it, store it in a dry place. Remember, this cable is just the replacement part, so you'll need your own Raspberry Pi Camera or Display to use it.