Carol Fey's Quadruple Play!
Get all four of Carol Fey's wonderful Quick & Basic books, covering Hydronic Controls, Electrical Troubleshooting, House Wiring, and Basic Electricity, all for just $55. That's a savings of 25 bucks! Check out the description of each book here, and then come on back and get a great deal on all three.
Carol really has a way with words, and with pictures, too! This is a great deal.