Using a built-in webcam and microphone on your computer, you can live broadcast on Facebook. If you want to, you can even connect higher-end production equipment.
It will link you to the Live Producer tool if you click the Live Video icon beneath the "what's on your mind?" status section at the top of your newsfeed. You will be given the option of selecting a video source. Choose the option to use the camera.
Write a description and an optional title for your live video on the left side of the screen. You can tag people or places here, or use the "Donate" button to raise money.
Click the Go Live button on the bottom left of the screen when you're ready.
To know more you can also visit about Facebook live stream.