So I just signed up, and am confused about setting up an online store. I thought this is what I was signing up for on this site, but it seems that it wants to send me to yet another service provider to create my online store. So Square ONLY ofers  payment processing? Out of the sites recommended for me to build an online store with, how do I know which is the best choice for me? I don't yet have a lot of items that will be listed for sale, but I hope to grow over the coming months. I'm not talking thousands of items, or probably even hundreds. More like dozens...