Best-selling author Beth Reeks writes about what she knows, and she knows plenty about being a teenager.The British 17-year-old captured the universe of crushes, cliques and first kisses in her book “The Kissing Booth,” which secured her a three-book deal from Random House.Reeks, whose pen name is Beth Reekles, wrote the book when she was only 15 and was frustrated with the reading choices availab...