The Dangerous Book for Boys is really cool, but can you blame us for feeling a little relieved—and excited—that there’s now The Daring Book for Girls? (We were raised, after all, on Harriet the Spy and riot grrl.) The nice retro layout expedites lessons in lost arts like how to whistle with two fingers, play fourteen different types of tag, and spy, but there are also great tips for the contemporary young woman, from how to negotiate a salary to math shortcuts to slumber-party games.