Jason Gilmore is an accomplished programmer who has been writing tech books for years. He's landed traditional book deals as well as published and sold books via self-publishing channels. And as a good programmer, he studies the data—all kinds of data. As Jason shares in this episode, there's a lot to know and calculate when it comes to the business value of books. From testing book concepts before you even start writing the book to analyzing the "product-market" fit of a book idea for a particular niche, the numbers never lie. The business of books is largely a numbers game for all types of authors hoping to build a profitable and successful career. If you're a non-tech author, you have a great opportunity today to learn about the numbers-side of the business from Jason. And if you are a tech author, you'll enjoy learning from Jason's example—because he's doing very well publishing indeed. After the show, find us on Twitter @WinningEdits or #authormba with your questions and comments. Enjoy!