Well, let's see (about loading photos, that is). Did you click first of all on "additional options"? That takes you to the neighborhood where you go to load photos. BUT -- you're limited to 500kb/4 images (totalling 500k), so don't try putting those high quality super panoramic shots of your shop on the Forum - that way. Lots of folks use a photo sharing site, like Photobucket or Flickr. In those cases you put the photos, any size you dang well want, on that site and just link the photo to the text blank of the post (the part I'm typing in right now, that is).
If you're not sure you can bring it off after you've tried a few times -- unh, shoot the photos t me and I'll post 'em if you'd like, or ask and I'll send you my very imposing and at-a-glance technical set of instructions on how to put photos on this Forum.
Either way -- good luck. We'd like to see the pitchers.