To upload a file, click on “write post” and then go below the writing box to the upload place. Click on the browse button and find the file on your computer, and then click on upload. Then click on the image and “send to editor.” This will give you a link you can cut and past into a comment if you wish. Rght now it automatically makes thumbnails — just detete the thumbnail part of the name of the file. I don’t know how to do it otherwise, and you are encouraged to improve these instructions.