It was very strange, I was trying to understand the language which was used on Facebook. Actually yesterday when I logged in my Facebook account, everything was written in brazilian language which was very tough to understand.

I had tried around 10 min to locate Language settings on facebook. I have found the solution and  if you are also facing same problem then just go to: http://www.facebook.com/editaccount.php?language
 and select your Primary Language through drop down menu.

Learn how to change language settings on facebook
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