^^^ root only ^^^
OK go to
www.xda-developers.com look up the root tool kit for the n7
There will be detailed instructions in the root kit.
After root: go to the Google play store, download Google drive(or drop box), download titanium back up, install busy box.
Depending if you buy the pro. version you can do what they call a batch backup (press the menu key and select the batch back up). Everything highlighted in red is system files don't try to mess with those too much. But with titanium you have the option to export the entire batch file to Google drive or drop box. If you want to back up all of your settings boot image text pictures basically everything you have on your device till the point of the back up you do what's called a nandroid back up. For nandroid backups you need something like clock work mod.
Go to the Google play store and download rom manager it will have an option to back up the rom,and press flash clock work mod recovery.
(Warning make sure your battery is at least 80% I recommend 100% before doing this) once you flashed clock work press back up rom. It will reboot into clock work mod recovery and then run command line scripts to back up everything. The process should take about maybe ten minutes. Once it reboots the back up is done. Then you can use a file manager to find the nandroid and send it to the cloud
INSPIRE AOKP ICE COLD SANDWICH ROM