WatfordOwl's post in Just got Kodi on my FireTV was marked as the answer
There's a thread in the Tech/Geek Zone here mate http://www.owlstalk.co.uk/forums/index.php/topic/234256-genesis-kodi-users/
Off the top of my head the following are pretty good.
UK Turk Playlists
This site will also run you through how to install each one https://seo-michael.co.uk/tutorial-how-to-install-njm-soccer-kodi-xbmc/
You may also need to download ADBFire to 'push' some of the files to the FireTV as well - you can get that here (as well as the guide to install) http://www.htpcbeginner.com/setup-fire-tv-on-adbfire/