How do I find the URL of my images I uploaded?

The easiest way to get the URLs for your images is to export your products (as a CSV via Set-up, Import/Export) and find the "image" column. Add this information to the end of "http://YOURDOMAINNAME.com/media/catalog/product", making what is in your CSV file as /3/-/3-3t.jpg into http://YOURDOMAINNAME.com/media/catalog/product/3/-/3-3t.jpg