You create an account and upload your pictures. You can create libraries to store pictures in making it easier to sort things out(i.e. rhino library for pictures related to your rhino). Once the pictures are loaded, you hover the pointer over the image that you want to use and you will see a gear shaped icon appear in the top right of the photo. Click on the icon and you will be presented with a number of options. The one that says IMG is used for forums and boards etc. When you highlight that and enter the image will be posted to your clipboard on your computer. To post the picture to the forum, press CTRL + V and that command will post the picture. Hope this helps!!!