Root help please...

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http://androidforums.com – I've had my Nex7 for a few weeks now and I've decided to take the plunge and root it. I know how to do it (having done it on my GNex some time ago) but the problem is that I'd rather not lose everything on the tablet and start again. Is there any way to keep all the apps, games and the rest of the stuff and just load it again in one hot after rooting?I know that Titanium Backup is helpful but doesn't the device have to be rooted before you can use it? (General)