Book excerpt: A recommended, proven way to broaden portfolios and profits Recommended by finance experts and used extensively by institutional investors, index funds and exchange-traded funds (ETFs) provide unmanaged, diversified exposure to a variety of asset classes. Index Investing For Dummies shows active investors how to add index investments to their portfolios and make the most of their money, while protecting their assets. It features plain-English information on the different types of index funds and their advantage over other funds, getting started in index investing, using index funds for asset allocation, understanding returns and risk, diversifying among fund holdings, and applying winning strategies for maximum profit.