How can i root my Samsung J5

A

AC Question

I want to root my Samsung J5 because i can't move any apps to my SD card after the Android 6.0.1 update and the internal memory gets full with only 6 apps (like Facebook and Instagram) and then it runs a lot slower.
I've never rooted a device before and i want the safest and easiest way to do it in a way that i can unroot it so i don't lose warranty
PS: Sorry if my english is not the best.