An Amazon Best Category Seller
The Amazon Echo is a natural language digital assistant, an important step in the race for home automation. But this device presents distinct challenges not seen elsewhere in software development.
TsaTsaTzu has published a book that goes beyond the Alexa Skills Kit (which informs Echo programming). Specifically, the book focuses on the special considerations that working with an audio interface presents for design, development and testing. Later chapters discuss what working with Amazon requires and reviews the general categories of skills development that have the most entrepreneurial potential.
http://www.amazon.com/How-Program-Amazon-Echo-Development-ebook/dp/B011J6AP26
