This tutorial teaches readers how to block someone on Facebook, even if they have already blocked you. The step-by-step instructions are provided for both mobile and computer users. For mobile, users need to open Facebook, sign in to their account, tap on the menu button, open account settings and then blocking. After that, users can type the person’s name or email address and tap on the block button. For computer users, the instructions include logging in to Facebook, going to settings, clicking on blocking, typing in the person’s name or email address, and then clicking the block button. The article is written by Nicole Levine, MFA and was last updated in April 2017.