Want to broadcast live from your PC? Easy!
You’ll need some software to produce and encode your live video, we strongly recommend using OBS as it is free, open-source and works extremely well. You can download OBS here: https://obsproject.com/
Once installed, you will need to ensure you setup the software in accordance to your requirements. Ensure your video & audio sources are setup correctly. You can read more on the OBS website here: https://obsproject.com/wiki/OBS-Studio-Quickstart
Some alternatives are: