FIRST TIME IN ENGLISH: A profoundly serious book you should read before investing your money. Compendium of the most effective criteria and principles for investing in any stock exchange, learned from the best masters of the art of stock speculation and proven (including errors) by an investor with more than 30 years of experience. For the first time the well-known author Abel Carvajal reveals the secrets, in details and reviews, of his activity as an investor, in South America, which allowed him labor independence and financial freedom before his forties. This book has important lessons on stock market investments, easy to understand, beyond technical analysis and academic theory.