I do abstract photography and want to set up my own website. I am not interested in for-hire work. I just want to have a place to point people to at galleries, etc. where they can see more of my work or order prints of something they like. For this kind of limited business, do I need to register as a business, copyright a "Jane Smith Photography" name or get a federal tax number? Or do I just need a domain name and that's it?