Well, this isn't starting out well. Bought it from kobo, tried to download it (to have backup on PC) and Windows Security quarantined it in multiple chunks which left me with a 1KB file which obviously isn't valid.
Grrrr...maybe I should have booted into Linux instead??? Hopefully their ebooks don't really have malware!
Did manage to sync it down over wifi. Hopefully I can copy it to PC via usb later.