Creating A Virtual Store

Hey guys I'm new to the forums as well as Unity. I was wondering what would be needed to create a virtual store front that would be compatible with GearVR. I know that's a pretty large task but I was hoping to try something smaller at first.

For example, a page like amazon that has products listed and you would be able to take that item from the page, rotate it view it from a full 360 view and then add it to a cart all from the headset. Where would be the best place to start?

Thanks!