Just my luck. I change my tablet to a Kindle Fire only to find Virgin TV Go isn't supported. One of the reasons I changed was my Hudl tablet didn't seem to work with Virgin TV Go. Not to worry. Even a technophobe like me managed to do the install of the Google Play Store as per Sol's link and I now have TV Go installed and it seems to be working. Thank you Sol.
It would be nice if VM provided the TV Go App for Kindle Fire users via the Amazon Appstore.