Honestly, I just prefer GNOME and the fact that their (Zorin) whole design philosophy caters to people completely new to Linux. I was too, a few months ago, and Zorin OS was a totally smooth ride.
Because I want to, if I like the experience, just keep the installed OS and delete my primary OS. Using a VM, if I end up liking the simulated OS, I have to install it and set it up anew.
Do you prefer .pdf or .epub?