You should be able to find quite a few video’s on youtube. I took a quick look at this one that seems to go through setup and use.
https://www.youtube.com/watch?v=KXcwUdDqXXo
Then there is this flow generator. If you used the ha editor this is kinda similar.
https://community.home-assistant.io/t/node-red-three-way-flow-generator/746547