World Beyblade Organization by Fighting Spirits Inc.

I am having trouble finding out how to upload pictures of what I want to sell. I know that there is the button to add the picture, but I don't know what it means or how to add a link for my pictures. Can I share a link to a site like craigslist or a blog that shows what all I have to sell if I still follow the posting rules (picture with date and name, etc)??
If not, can someone help me out with these pictures? Ive been on threaded pages like this before and never needed that to post a picture.

You can upload your images to an image uploading site like http://imgur.com and use the links to the images from there. Hope this helps.