Well, the easiest way to root your android device sure is using Chainfire's tool, CF-AUTO ROOT. But, I don't really recommend it, as if your device is running into trouble, then you have no idea what's going on, and when that time comes, it will be your real trouble. Wait a second, man. You will want to watch this video first : Done? Then, we're ready to go. So, here it is, The rooting guide for the Google Nexus 5. ( This is taken from geek.com, I'll write my own guide later.. ) Getting your hands dirty The best way to root your Nexus 5 is to do it step-by-step yourself — it isn’t even very hard with this phone. You will be able to check along the way to make sure things are working correctly, and you’ll have a better handle on how to fix problems that might crop up later. The first thing you need to do is download the official Android SDK from Google. Run the SDK manager and install the suggested components, which will include the Android USB