The Bogleheads' Guide to Investing, written by Taylor Larimore, Mel Lindauer, and Michael LeBoeuf, is a comprehensive guide to investing based on the principles of John C. Bogle, the founder of Vanguard Group. The book covers a wide range of investment topics, including asset allocation, diversification, retirement planning, and tax-efficient investing. It emphasizes the importance of low-cost index funds and a long-term investment approach. The Bogleheads' Guide to Investing provides practical advice and step-by-step guidance to help readers make informed investment decisions and achieve their financial goals.