[header] How to comment on a photo on facebook [title] Go to one of the " facebook " website links provided to you within the sources section of this article. [title] Click on the " back to facebook " link, which is displayed in the upper-right corner. [step] This action will take you to the facebook login page. 
[title] Type the email address and password for your facebook account into the blank fields displayed in the top-right corner of the login page. [title] Navigate to the photo you want to comment on from within facebook.