eBooks with extras!
This blog explores ebooks that offer more than flat PDF oe epub readability. There are some amazing stand-alone resources out there.
(Here's a sample post.)
"In my pursuit to discover and learn as much as possible about digital publishing and the interactive eBook, I search for engaging and innovative ways of presenting content. I look for interactivity which adds real value to the user, and creates experiences that simply aren't achievable in standard printed publications. For Example, a new navigational system or interaction which brings a story to life in a way never before possible."