if noob, i suggest u dun start with kodi builds.
becos builds dun last long... and they take up huge storage.
yr TV likely has limited storage... be careful not to bust it and brick the TV.

what u r looking for, u can start with simple standalone apps to get to know how they work.
what apps and where to get... people dun discuss much in public these days due to piracy and legal issues.
so, u gotta google a bit, follow up on some tips, test and try.
u already know popcorntime... there plenty of others.