I found some very interesting and creative ideas for authors here. Karen interviews such diverse and creative people! If you are looking to authoring beyond books, you'll find concrete examples here. Then, when your project is undersay, I'd recommend Karen's book on finding an app developer, because this isn't something you can just improvise. How to Choose a Book App Developer. Meet 20 Companies Inside.
Useful, timely advice on creating and publishing an book app. Great resources and lots of case study interviews with creators. Best of all, I got this ebook for free, this author is very giving to the author/illustrator community. Highly recommended!