Backing Up Your Files
You've worked hard to accumulate all of your files. Hours of typing, hundreds of photos, piles of music CDs—it's all there on the hard disk. So, what happens to it if something goes wrong with your computer? In many cases the answer is, unfortunately, that all of the data is lost forever. To save you the pain of this experience, it's a great idea to make regular backups.
Plenty of backup utilities are available, but Déjà Dup stands out to me as being the easiest to use. Open the Ubuntu Software Center, and install the Déjà Dup Backup Utility. It'll put itself in the System Tools section of the Applications menu, so head over there and start it up.
Now is a good time to decide what you're going to use to store your backups. ...