One of the biggest surprises to those of us who come to ebook development from the web development side of things is the scarcity of documentation. (digitalpublishing101.com)
For example, I have found great mentors on the product development, analytics, finance and business development side of life. (entrepreneur.com)
Also, from development side (my wife is a front end developer) and has seen issues caused by this notch when designing mobile friendly sites. (sammobile.com)