I will try..

.. scroll down to go advanced click on that.. then scroll down to manage attachments..click on that..a window will open to browse your pictures..pick a picture and click upload when done uploading..close that window and then in the posting box of your go advanced window up at the top click on the thing that looks like an envelope or small picture..it is insert image..type the name or number of your picure in there and click ok... it should post the picture if it is the right size..if it is too big you have to make it smaller in your computer in your pictures first.