Originally Posted by ergalthema
I'm a bit late on this. I've never rooted my Nexus 7, but I'd like to check out Android L on it. Could someone kindly point me to the most recommended instructions for achieving this?
Mine came rooted, but you probably can use Nexus Root Toolkit as a easier way to unlock and root.
And then I've highly recommend to use multirom to not affect current version as long as L is not yet released.
Multirom could be installed from Play, than you need to apply its prerequisites and install from add rom feature of twrp.