1. iReader Experience
Your attention as an author of an interactive book should be directed on the balance between, text, image, video and interactive features. Basically, it is depending on the idea, structure and purpose what the balance should be like. Where one possibility could be to make the iReader a co-creator in the book. For instance, where the iReader is following a path of her choice in a story with different endings. Your challenge to the iReader should be; do it!