Facebook began as a social networking website founded by Mark Zuckerberg in 2004. It has since grown into one of the largest wikis of the 21st century, with over 1.3 billion users. Facebook allows users to create profiles, share photos and videos, and connect with friends worldwide. Teachers are now also using Facebook in the classroom by creating groups, sharing content and notes, and communicating with students. However, effective educational use of Facebook requires proper training for teachers and manageability for students while ensuring online safety.