Introductory deal: Receive a free puzzle book when you join the Puzzlemania Book Club from Highlights for Children and purchase a second book for $4.95 plus $2.45 shipping and handling. The puzzle books, which include mazes, brainteasers, word games, hidden pictures, memory games, math puzzles, "What's wrong?" pictures, dot-to-dots and matching puzzles, are designed for children ages 6 to 12. Then: Every five weeks the Puzzlemania club will send two new puzzle books for $4.95 each plus $2.45 shipping. And: That's it. You can cancel your membership at any time. Shipping & handling: $2.45 per order. Return days: 10. Credit card required? Yes (required to join). Sales tax: Illinois, Ohio, Pennsylvania, Wisconsin. Customer service: 800-316-4858. Open to: U.S. residents, including its territories and APO/FPO.