A Simple Automated Way to Root Your Tablet
If you are looking for a simple method for rooting your Nexus I would recommend Wugfresh's Nexus Root Toolkit.
You can download the toolkit here:
To start, all you need to do is simply install the drivers. After that go ahead and root away. The toolkit guides you through the process in a very step-by-step fashion.
Definitely for someone without a technical background who wants to root their N7.