Maybe in the process of creating that skeleton, a new user is led through the “Add Equipment to Model” and “Create Equipment from Thing”. If the user wants to add a light bulb or a wall switch a drop down presents options or search and install bindings?
All the while explaining the openHAB parlance
Hey for anyone who wasn’t around back when 2.2 came out
Here is the home builder

I agree but as Yannick said ‘There’s a first-time user wizard, but it’s deliberately kept to the bare bones because it might annoy if you stretch it too much.’
I could see an advanced user really being annoyed by the wizard.
So, in my opinion, from the very first screen, there needs to be a checkbox at the bottom, I am an advanced user, get this bloody stupid thing out of my face never to be seen again
And then, maybe a little wizard icon in the corner of various cards, maybe a little wizard cap or magic wand that can invoke the wizard anytime.