The article discusses the growth of Hedge Funds in recent years, with over 8000 in the US alone. It explains that Hedge Funds offer different investment styles and can be complex for investors to understand. The authors aim to help investors by explaining the various types of Hedge Funds and key issues in the industry. They cover styles like market neutral and fixed income arbitrage, as well as fund of funds and capital guarantees. The book is recommended for anyone invested in Hedge Funds or considering starting one.