Fantastic! I'm apparently reading these "Pottermore Presents" books out of order, but it does not matter at all. This one contains biographies by J.K. Rowling of four Hogwarts professors. I enjoyed learning more about Minverva McGonagall the most, followed by Remus Lupin (what a sad existence), Sybill Trelawney, and Silvanus Kettleburn, who apparently was the Care of Magical Creatures professional before Hagrid? I can't say I remember that, but it has been awhile since I read the first two HP novels. That's also the same order of the biographies in the book. Oddly, each was shorter than the last. I really enjoyed learning more about these characters, it adds so much more depth and personality to each of them, in my eyes, by learning about their lives before Hogwarts. As a reminder, these Pottermore Presents books are super short and can definitely be finished in one sitting.