The Ghost hosting interface is deliberately simple, ensuring there are no confusing options to slow down your installation. Setup is as easy as hitting the New Blog button, filling in your preferred blog title, and clicking on the Create New Blog button. That's it!
As soon as you have installed Ghost online, there is one thing that you must do immediately and without delay: register your blog's owner user account.
With Ghost(Pro), you have an overall account you log into at http://ghost.org; however, you'll also need a user account for each Ghost blog you create in order to log into their individual admin areas.
Some hosts will take care of this user account setup as part of the installation ...