Hi! Welcome from Minneapolis! To add to the instructions given by SusieQ, look at the little toolbar that appears after you hit "reply". On the right side and then moving left is a comment icon, then a film strip, then what looks like a movie screen. If you want to post a picture, just hit that icon and you'll be prompted to attach a photo from your computer. Then hit "upload" and it will appear in the message box for you. Then you can hit submit and you're all done.