What are the first three steps for starting a magazine?

Check your local library for books on starting up and operating a business.

I think you should first carefully select a domain name/ URL that is available and for a price you can afford. This should be chosen carefully so that you can also get a trademark on the name. Then buy it and possibly buy who is protection to cloak your identity. Second, you should get a trademark on the name. Third, you should get one or more basic design elements and trademark and copyright those. Fourth, you should find out what kind of business entity your should be and decide in what state you want to register it. You should absolutely have a lawyer conducting all these steps for you.