Simple Backup for your Android
At the Home screen, touch the Apps icon >> Choose Settings >> Display your Google account information >>
On the stock Android version of the Settings app, swipe down the screen until you find the Accounts heading. Choose Google >> On some Samsung tablets, choose the General tab to find the Accounts item. Choose Google from the right side of the screen >>

Touch the green Sync icon by your Gmail address >> The Sync icon, although it may appear slightly different on your tablet’s screen >> Ensure that check marks appear by every item in the list >> Sure!, there are a lot of items.

Each one needs a check mark if you want that item backed up >> Touch the Back icon twice to return to the main Settings app screen >> Choose Backup & Reset >> The command may also read as Back Up and Reset, or some such similar variation >>
Ensure that a check mark appears by the item Back Up My Data.

A backup of the data stored on an Android tablet would include all data, including photos, videos, and music. Specifically, the folders you should copy are Download, DCIM and Music. Other folders that you would want to backup include folders named after apps you’ve downloaded, such as Kindle, Aldiko, Apk, Layar, and other folders named after the apps that created them also.Read more...http://trendymediablog.com/2014/07/how-to-back-up-your-android-phone-or-tablet/