In this tutorial, Mike Montgomery shows up how to tag a friend in a picture on Facebook. First, log into Facebook and click your photos and upload your photo to the desired photo album, or create a new one. Once it's uploaded you can add a caption to the picture as you wish, then click on "publish now". If you would like to involve your friends in the picture that have Facebook, click on the "tag this photo" button. You can click on their faces in the photo, then a drop down menu of your friends will come up where you can tag all of your friends. When done, click "done tagging" and you've now tagged a photo!