To live stream on YouTube, you can use your mobile device or computer. Here are the steps to create a live stream on mobile:

1. On your phone or tablet, open the YouTube app.
2. At the bottom, tap Create Go live.
3. Follow the steps to create a live stream.
4. Tap Go live.
5. To end your stream, tap Finish.

If you want to live stream on YouTube using streaming software, you can use desktop services like Talk Studio's live streaming app or streaming software like OBS Studio. Both of these streaming services are integrated directly with YouTube. That means you can go live to YouTube from these products without having to enter a stream key.