“Dummy” is a word for a stupid person£®The dummies books are not really for stupid people£®They are designed to show people how to do something they may never have tried before, like painting a house or learning a language£®The books all say in a funny way that they are for dummies, such as World History for Dummies, Rabbits for Dummies, Chinese Cooking for Dummies, and Wedding Planning for Dummies£®The first such book, DOS for Dummies, was published in 1991£®It helped people learn how to use the DOS operating system for computers£®Since then, more than one hundred fifty million dummies books have been sold£®