Using the Allen & Heath GLD-80 digital audio mixing surface is easy. First, connect the correct power supply to make sure it gets the right amount of power. When you start using it, adjust the volume and tone controls according to your audio source. For different audio inputs like microphones or instruments, set the appropriate gain levels. Be careful not to overload the inputs as it can cause distortion. When you're done using the mixer, turn it off properly to save energy and extend its lifespan. Regularly clean the surface with a soft, dry cloth to keep it in good condition. Also, avoid exposing it to extreme temperatures or humidity, as this can damage the internal components.