what?wala naman kelangan bago magroot ts..baka after ka magroot..kasi ganto un,if your willing to experiment or flashing custom roms first step is to root your device,2nd install custom recovery ie. carliv,cwm,twrp..3rd take na nandroid back up(full back up gamit custom recovery mo for security purposes) lastly you can now tweak your sytem apps,install custom roms etc.