Additional Social Media Link

Greetings, I would like to add a link to a 2nd Facebook page with the other social media accounts. I looked through this DB and found one answer that mentioned the social portion in PHP, but I don't know PHP. Is it possible to do this in CSS? I can enter in the URL into the field for an unused SM site like MySpace but need to know where to change the logo to the FB logo. Thanks, Shane PS - Yes, I did make a backup now. :)