The book is about investing in stocks and how to build wealth realistically and is based on a series of letters sent by the author to his daughter to teach her the principles of financial independence and investment. In the book, Collins explains, among other things, how financial insouciance leaves investors prey to financial charlatans who make investing endlessly complicated; Because the more complex it becomes, the more profitable it becomes for them, the more expensive it becomes for us, and it forces us to stay in their arms. The author leads readers to understand why they should avoid debt, how to deal with existing debt, explains the unique way of thinking about money and building wealth, highlights the good and bad advice about traditional investing, talks about the stock market and how it works, and shows how The stock market is always rising, but people lose in it, and it details how to invest in a rising market, as it introduces us to the investment rule called four percent.