The fastest growing book market in the world is the electronic book that can be read on a tablet.  A vast readership is in the developing world.  People may not have a book store, but they have a reading device.  Having traveled in India, the man sitting on the oxcart has a cell phone.  Graphic books are in demand.  Combined pictures and text are a tool for learning English.  So, graphic story tellers, writers, and artists:  think e-reader, think globally.