How To Download A Copy Of Your Facebook Data

Go to the settings icon in the upper-right corner of your screen and click “Account Settings” option from the menu.
Select General option from the left sidebar.
Look after the “Language” option and you should be able to see the “Download a copy of your Facebook data.” option.
Click “Download a copy”, and click “Start My Archive” and click “Confirm”.
Your data should be sent to your primary Facebook email.