Hi robmano, and welcome to the Zorin forum! I did post in another thread but see you started a new one which is the correct thing to do. My advice (as Zorin have always advised) would be to download the .iso from here:
Create bootable media and do some extensive testing in 'Try Zorin without installing' i.e., Live Mode - to ensure you are happy such as your Fn keys work and touchpad works as it should. Only then look at installing. 
You may want to browse the unofficial manual for Core: