Tvheadend

hi all i have Nvidia shield pro 500gb in the nvidia forum.they give us the apk file install for our shield so we can build up the TVHeadend server right on our shield,just like this youtube video : https://www.youtube.com/watch?v=WfCHduR2iVU&feature=youtu.be

but im too new with this,i open the setup home page of the tvheadend i have no clue what i have to do.Right now i have HDHomerun Prime Tuner and 1 Fios Cable Card i would love to setup the tvheadend server that i can create the M3U file or M3U Link to able to stream in the IPTV app

please help me thanks alot.