If you practice any sort of magic--or plan on giving it a try--you probably know that for most people, card tricks are often the starting point. If you have a deck of cards readily available, as many common households do, the only things required to wow an audience are a little sleight of hand and a magician's secrets. In spite of the timeless credo "good magicians never reveal their secrets," renowned magicians Jean Hugard and Frederick Brau...