easiest method for someone new
launch the firestick setup your wifi etc
goto settings, device, developer and enable both options
goto search and find downloader (its orange) install and open this
enter url for the kodi 16.1 install
http://troypoint.com/kodistable
click download. click install
when its done - then you launch kodi (its blue and white)
I feel like a nerd I have this all memorized. inside when kodi launches scroll over to system file manager, add source. enter this url
http://infadroid.tk/temp
hit ok ok go back to system now choose system info I think it is. choose add-ons, click install from zip. scroll down to temp hit ok. install the Jarvis file. you'll see a thumbnail popup box lower right corner saying inafroid boxes or something has been installed. hit the back button, select install from repo. choose infadroid boxes choose add ons, click install wizard. click install.
when its finished go back a few times til your at the main menu, select programs- add ons, infadroid boxes. install wizard. install wizard latest builds, click titanium. let it download and install. when its finished and you see a 'OK' pull the power from the wall. plug back in and launch kodi you are now part of the elite club