Sometimes a picture is worth more than 1000 words. Many people starting out on this forum are frustrated because they can't link to photos stored elsewhere on the web.
But the good news is, you can post pictures directly on this forum. Click on the "Upload attachment" tab below the editing screen, and "Browse" on your own computer to find the photo you want to display. Click "Add the File" and then position the cursor in your text box where you want the picture to be and click "Place Inline"
By the way, notice that there is a Wiki associated with the Printrbottalk forum. Click on this button in the upper right of the home screen.