We've been working on a Setup Wizard to assist in getting started. The Wizard will prompt for publisher information (name, address, etc.), then information for each book, and if you are using royalties, each author and royalty definition.
Once that information is entered, sales can begin!
Of course, more books, authors, etc. can be entered (and edited) after this initialization. The Wizard is more of a good prompting tool to get the basic information in the program.