Jk Rowling wrote her first book when she was six it was about a rabbit.she wrote her first novel when she was eleven. this love for books would change her life forever. what made her life change the most? well, that would be her harry potter series. it had sold 400 million copies in a year. her idea for the book harry potter came when she was sitting on a delayed train and she had nothing to do so she started to write. and when she got off the train she had 3 chapters of the book we all know today as harry potter and the sorcerer's stone. Having completed the book, she sent the first three chapters to a number of editors, one of whom wrote back asking to see the rest of it. according to jkrowling.com she said that it was “the best letter I had ever received in my life.”The book was published by Bloomsbury Children’s Books in June 1997, under the name J.K. Rowling. in 2016, J.K. Rowling made the film Fantastic Beasts and Where to Find Them, a yet another movie of many of her amazing books A prequel to Harry Potter, this marked the start of a five-film series to be written by the author. J.K. Rowling has also written two small books which look like the titles of Harry’s school books within the novels. both were named in the first book Harry Potter and the sorcerers stone. Fantastic Beasts and Where to Find Them and Quidditch Through The Ages were made in March 2001 as a form of comic relief. but jk Rowling says her favorite book was her first harry potter book harry potter and the sorcerer's stone jk rowling also started many charities for foster children. and they, of course, made a lot of money.