If you are apprehensive about typing in Fastboot and ADB commands, m.sabra is developing a one click root tool at XDA Developers. The developer already has one click tools for the nexus s and galaxy nexus and bases this tool on the same code used for those. Once the Nexus 7 begins shipping the tool will be finalized and the procedure will be as easy as downloading the tool, installing the drivers, clicking on root.exe, and following the prompts. This is the link to the One Click Toolkit
at XDA Developers. Look for a guide here once the tool is finished.