Question [Q] Rooting Galaxy S3 running official Android 4.3 JB

Hello all,
So, same as the title, I have wanted to root my Galaxy S3 running Android 4.3.
It is a factory unlocked device, and I am not bound to any contract/ISP/telco.
I have seen some posts in some blog that I can use Odin and CF-Auto-Root, but I am not sure if it will work or if it will add another brick in my house. I am also concerned on Samsung Knox and if anything unwanted happens if I root it.
Can anybody pinpoint me to a good tutorial here or anywhere?