It's been a while since I've had a store so I'm not sure if I can really be helpful or maybe things have changed. But what I recall is you are not allowed to link your website in your listings. I used to have a banner that included my website address.
You have to upload a lot of pics and that's why it takes so darn long.
You can put whatever you like in your store. It does not have to be for only one thing or another.
Edit
I see I'm wrong on some things... Nevermind me!
