Need some help with the Directory Listings Plugin

I want to have a pretty simple listing of retailers that includes logo, name, tel.# and website address. Since I have various types of products, I will need to have categories that I can check for each list item. When I put the shortcode on on a page, I want the page to show the list of resellers within that category. No selling - no payments. I have installed your Directory plugin, and have read the documentation, but I'm not grasping how to set this up. Can you tell me what settings need to be checked to accomplish this?