Depends what you are talking about...if you mean comments, then well, you just go to the wall and there will be a blank space that says "Write something on the ____ wall." It's pretty straightforward...but if you need help still then comment on my post, add me as a friend, and message me...
JUST LOOK AT THE THING YOU WANT TO ADD AND PRESS ADD A ______!! how do the caps feel on you, huh? you have annoyed me so i will sic my dog on you. WHISTLE GO!
Click answer question.
When it shows the white box, click 'add an image' which is under the box.
Then, as I do, pick a picture, drag it to the desktop and then just drag it toward Choose File and then it'll load and then just enter the text and click 'submit new response'.
Now please learn to ask questions in a orderly manner.