If you want nobody to find you online or someone you added as a friend that is irritating you, there may come a time when you will want to block someone on Facebook. As part of its extended privacy and security policies, it is easy to block that person. Follow the given steps which is helps you.

Block a User on Facebook
• Sign in on facebook account then go to "My Privacy" page. You can change privacy levels for nearly all Facebook feature from this page.
• Select the person you would like to block in the "Block People" box on the My Privacy page and hit "Search."