You hit the little picture frame icon at the top of your post and it will put in a drop down box asking you on your computer or an internet URL. Choose the appropriate one, e.g. the picture is in your computer's hard drive, pick the from computer tag. Click on browse, and navigate it to where your picture is stored on your hard drive, click on the picture then click open. Click on the upload files, and the picure should upload to your post. The second method is to use something like photobucket and get a URL for it so that it is online. Then you click on the other tab from URL and input your url of the pictures.
