Recently I bought a Kindle Fire tablet computer on a special sale for about $40. (Currently it retails for about $50.) What a bargain! I have a large, personal library on my Kindle.
Wouldn’t be nice if a parent or teacher could go to one or a very few websites and find many thousands of free books they could download to build a personal library for their children and students? Significant progress has occurred in this endeavor. My 5/11/2016 Google search of the expression free downloadable children's books online produced over 13 million results. While it requires Web connectivity to download such books, once they are downloaded they can be read without connectivity.