I want to root my phone. I've never done it before, and although I do know my way around, I'm not great with the Android OS. My phone runs 5.1.1, and I know that rooting it leaves it open to viruses. Will simply not downloading things keep me safe from viruses? I just want to root my phone, make some changes, then probably unroot it. How can I avoid turning it into a brick or getting a virus? Please help.