The Magician's Nephew

Yay, C.S. Lewis! The first of the Narnia series, which of course I've read multiple times, except not since the early '80s, so it's delightful to be going back again. His writing is so fresh and charming, and dryly English. The only problem is that while a good friend gave me 6 out of the 7 books of the series, book 2 (The Lion, the Witch, and the Wardrobe) is missing, so I'm not sure what to do. Skip ahead to book 3? But that feels so wrong, somehow. Stumped, here.