Here are a few very interesting Rowling quotes for your reading pleasure. I've added my own thoughts here and there.
About the first chapter of Philosopher's Stone:
"The very, very earliest drafts of the first chapter of 'Philosopher's Stone' have the Potters living on a remote island, Read MorePm1.4.1• Source
Essay: Ghost Plots Rowling writes about having created backstories for many characters and details about the Wizarding world which never appeared in the books. She refers to these as ‘ghost plots’ and says that they are as real to her as the plots that made it into the books themselves. Read MorePottermore website launch (2011)• Event
J K Rowling’s new website for Harry Potter fans (http://www.pottermore.com) was originally launched in July 2011, with limited access to a group of beta testers. It was opened to all fans in April of 2012. Read More