T. H. White 
Sword in the Stone [EPUB ebook] 

The extraordinary story of a boy called Wart — ignored by everyone except his tutor, Merlyn — who goes on to become King Arthur.When Merlyn the magician comes to tutor Sir Ector’s sons Kay and the Wart, schoolwork suddenly becomes much more fun. After all, who wouldn’t enjoy being turned into a fish, or a badger, or a snake? But Merlyn has very particular plans for the Wart.This edition of T.H White’s classic story includes a special "Why You’ll Love This Book" introduction by bestselling-author, Garth Nix.