Every pic you store will automatically have its own URL. Use your File Manager to keep up with what you have stored. Using it, you can upload new ones, delete old ones, or rename them. Once you get them uploaded, use this HTML command to post them:
I'm gonna use parentheses () instead of carats <> so that it doesn't try to execute the command here.
(img src=insert URL here) example: One of the pics I posted above is:
(img src=http://ourworld.cs.com/Dawgsquat/JDLibrary.jpg)