Forget those instructions. As the kid who lives in my basement says, "Dat's messed up."
In order to compile this beauty, you will need to first do, in a terminal with an internet connection:
Where is the file you downloaded? On your desktop? Right-click it and select 'Extract here.' A folder will be created called rtl8712_8188_8191_8192SU_usb_linux_v18.104.22.168.201011 11. Inside it is a folder called 'driver.' Open it and see a file called rtl8712blahetc. Right-click it and select 'Extract here.' A folder will be created called rtl8712_8188_8191_8192SU_usb_linux_v22.214.171.124.201011 11. Now back to the terminal:
sudo apt-get install build-essential linux-headers-generic
You don't need to carefully type all that! Just type in:Press Tab and the rest of the first part will fill in. Add driver/rtl and press Tab and the remainder will fill in. Now do:
Post back and let us know how it goes.