You can connect a karaoke device to your computer using the provided cables (usually AUX, USB), or use Bluetooth. The rest of the setup should not be difficult. Follow your specific device instructions for lyrics to show up on your computer.You can also search Youtube for free karaoke tracks (i.e. Backing tracks that don't have vocals, but contain the lyrics. Connect a microphone to your karaoke speakers for a more enjoyable experience.