Using this SKAARHOJ Mini Fly Live Video Switching Controller is quite straightforward. First, make sure you have a proper power supply as it's not included. Connect the controller to your relevant video - switching setup. When using it, be careful not to expose it to extreme temperatures or humidity. For maintenance, keep it clean by gently wiping it with a dry cloth regularly. Avoid using any harsh chemicals. If you face any issues, check all the connections first.