Howdy. I'm sorry, I moved it. Usually introduction posts go there. But I'll leave this one here for ya so you can add to it as you see fit.
Upload file is for pictures, pdf, and other stuff. You can use imgur or another host site to do this. Or if you can upload direct to the site, providing the images mb is small enough.
I usually send the pics to my phone then save it, then post up the saved pic.
That way it resizes it for you automatically....