Hi,
The setting of a STARDOG_HOME environment variable is actually
optional for Windows. If it's not set, the .bat scripts will set a
default value of your installation directory (the unzipped Stardog
distribution with the bin, client, server, etc. folders). If you're
OK with that also being your home directory, you can just copy your
license key (stardog-license-key.bin) in there and proceed with
starting up your server as shown in the quick start guide. If you cd
into the bin folder of your install, the commands will work as shown
in the guide.
Hope this helps,
-Stephen