J.K. Rowling's debut book was Harry Potter and the Philosopher's Stone, which was followed by the remaining six volumes in the Harry Potter series as well as three books that were written for charitable purposes: Fantastic Beasts and Where to Find Them, Quidditch Through the Ages, and The Tales of Beedle the Bard. The Harry Potter books have already been published in 78 different languages and have sold over 450 million copies worldwide.