What the heck is book coaching?

Book Coaching—in which Pru learns that there are people (including Merry) who will act as a book tutor. More personal than classes, more targeted than how-to books; a coach costs money…but it’s an investment, like a college education. Pru decides she’s ready to hire Merry as her tutor. (Obviously. I’m inexperienced, but I’m not an idiot.)