There isn't yet — we've been waiting for things to settle so the guide doesn't get outdated from us changing the system or UI. Two recommendations until then:
- You should be able to open up the tutorial mission (one of the "stock" maps) and use it as a reference for how the triggers work.
- If you have a specific question, post it here so other people can also see it. This will also help us know what to cover for the eventual guide.