This is another important piece of the puzzle, but where the FabLab Library Index focuses on actual projects and the files you’ll need to load them into machines to make them, this index focuses on knowledge. All of these ebooks are either part of my own personal collection (legally acquired), or found free on a variety of sources on the web. They are provided here as a free resource for anyone who’s interested in Playing the Planet has all the information they need to do so. Many of these books will figure heavily into the game’s Quests, being reference materials for them. Enjoy.