Go back to the link I posted above on the Complete Future, the ratios are about halfway down the page.
Posting pics are easy, and I made a tutorial in the Community Assistance forum:
/forums/815119/ShowPost.aspx#815119
It takes you through registering on Photobucket (which is a free pic hosting site, there are others like Image Shack or Flickr, they're all about the same in use) to posting the actual pics in the forum.