Sorry for the delayed reply - Is that you do not have access to a computer or you just do not wish to use Advance programs like the SP Flash tool. I ask because you could install a Custom Recovery using the SP Flash Tool and then apply the SuperSU.zip update via recovery mode. Alternative to that you could use the Kingo Root app which may be arguably the easiest to use as it auto install device drivers and present you with a "Root" button after clicking which roots your device straight away.