OP, if you haven't even tried anything yet you can start by reading on the app's quick start guide.
https://www.bimmercode.app/quick-start-guide/
I'd start by coding ASS (Auto Start/Stop) which doesn't require coding in expert mode. If you get to that point you should be at least 90% ready to coding ADV.
I'm pretty new to coding myself and with this app I found the process to be simple enough to follow.