Books which give instructions on how to do things are popular in the United States today. Thousands of these "how to" books are available. In fact, there are about four thousand books with titles that begin with the words "how to". Many "how to" books give advice on careers. They tell you how to choose a career and how to succeed in it. Many of these books help people to use their free time better. Some people want books which will give them useful information about sports, hobbies and travel. Other people use their free time to make repairs and improvements on their homes. They prefer books which give step-by-step instructions on how to repair things like plumbing and electrical wiring or on how to redecorate or enlarge a house. Why have "how to" books become so popular? Probably because life has become more complex. Today people have far more free time to use, more choices to make, and more problems to solve, "how to" books help people to deal with modern life.