Hi Drake,
The learning path is referring to the domain model of your "MyFirstModule" module. In your screenshot, you have the domain model of the "System" opened. Each module has got it's own domain model. The domain model of MyFirstModule is editable and should be empty still. You can open the MyFirstModule by double clicking on it, or click on the arrow at the side :)
Hope this helps,
Regards, Jeroen
Hi Drake,
I believe you need to expand MyFirstModule at the bottom and click on the Domain model.
The System Domain model is read-only and you should leave it like that, any updates you do, you usually do in your own modules.
Hope this helps, success with the Rapid training!
Best
Rob