Hi Stephen
I got it working, but only through trial and error and a lot of guess work, so what I did probably isnt the way it is supposed to be done.
I read about the error meaning a port is already in use, and tried closing the first cli window where you ran "node server" before running the "grunt server". This stopped the EADDRINUSE error, but I still got stuck halfway through the install of adapt_framework within the authoring tool folder.
Got it to fully install and run by using cli to navigate to adapt_framework folder and running npm install.
Hopefully someone who know what they are doing can advise better.
Andy