How can inexperienced investors learn to buy, sell, and hold securities intelligently? What is the difference between commong and preferred stocks; convertible and non-convertible bonds? What other kinds of securities are available to alert and prudent investors? How should you read a financial prospectus so that you'll get an accurate fix on the value of a stock? Answers to these questioins and more are the basis of the 50 Keys presented in this book, Master each Key, and you master an understanding of securities.