Back up ipad on icloudopen Settings app from the Home screen
tap on iCloud > Storage & Backup > Manage Storage under the Storage section > tap on the device that says This iPad > Under the Back up Options section, you'll see a list of apps and how much data they are storing in iCloud.
It's self explanetry when you get started.
After restoring ipad to factory settings and set up go to Settings menu > General > Software Update to make sure Safari is updated.
Go to Settings > iCloud > Storage & Backup, then look at the bottom of the screen for the message Last Backup, followed by the date of the latest backup.
https://support.apple.com/kb/ph12521
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