The document discusses the growing popularity and adoption of mobile devices. It notes that there are now over 6 billion mobile subscribers worldwide, with 1.5 billion using 3G/LTE networks. Mobile adoption and usage is growing faster than early desktop internet technologies like AOL and Netscape. The iPhone in particular saw unprecedented growth, surpassing 120 million subscribers in just over 3 years. The document advocates for a "mobile first" approach to learning and outlines several challenges for participants, including rapidly creating an ePub ebook, educational videos, and a multi-touch iBook.