I'd recommend installing the handy Addon Installer. Easiest way to install addons.
First follow instructions to add Fusion Installer:
http://www.tvaddons.ag/fusion-installer-kodi/
Second, follow instructions for installing Addon Installer:
http://www.tvaddons.ag/addon-installer-kodi/
Once that's finished, just launch Addon Installer and browse plugins. The Featured section is a good place to start.
My recommendations:
1Channel/Primewire
SALTS
IceFilms
SportsDevil:
http://forums.tvaddons.ag/sportsdevi...o-librtmp.html
NaviX
If you pay for NFL ticket, then download the NFL Gamepass app from Android Play store and watch that way.