"Titanium Backup". You have a lot of reading to do in the general threads. Depending on your firmware version will determine your available root methods. There's Kingo Root,Evilpotatoman's method etc.Read through the threads and then read again to make sure you grasp the methods.
Sent from my SAMSUNG-SM-N900A using XDA Premium 4 mobile app
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?