E.g. when Google changes interfaces in popular apps like gmail or maps you usually have the option, when you visit the first time, to see tipps/hints/videos etc. what you can do where. Some Android/iOs Apps do this kind of introduction as well.
I would expect, that you could maybe define some events, that need to be triggered until you get to the next step and other events that trigger notifications/popups of any sort.
I found it hard to google for such functionality. Maybe this doesn't exist and I need to write it from scratch