This book gives a hands-on recommendation for a financial portfolio likely to deliver good returns to its investors. It reviews methodically the performance of a broad range of investment alternatives and settles for ETFs passively tracking the market index. While such a recommendation in itself is not particularly original, a solid analysis of past data is performed and allows to formulate the plausible claim that for every 100$ regularly invested in the stock market over 30 years, long term investors can expect at least 200$ of income from their investments over the subsequent retirement of 30 years.