What were the most popular books in English classrooms in 2017? The classics continue to dominate our annual list of best-selling paperback books; but this time around, we also saw three new titles crack the top ten. Shakespeare was our most popular author of 2017—he penned three of last year's best sellers. Our Literary Touchstone Classics accounted for seven of the top ten. We're happy to present our top ten books of 2017.