In this how to video, you will learn how to tag pictures on Facebook. To do this, first open up Facebook and log in to your account. Next, click on a friend's profile page and look for a picture that you may be on. Once you are there, select tag and the click on your face in the picture. From there, type in your name and click okay. Once you are done tagging, click done tagging. You have now successfully tagged yourself in a photo in Facebook. Now when you mouse over your face, a square will appear with your name. You can also tag your friends this way.