The Vanguard Total Stock Market Fund ( VTSMX), for example, invests in stocks that mimic the entirety of the U.S. stock market and has an annualized total growth of 10.74%. T. Rowe Price Equity Income Fund ( RRFDX) is another strong performer. Learn about other quality stock mutual funds by visiting Morningstar, an independent rating service for mutual funds, or TheStreet.com Ratings. Once you find a fund you want to invest in, you can usually fill out the paperwork online and mail the company a check. On a day-to-day basis, mutual funds, like the stock market, can fluctuate, so plan on sticking it out for the long haul to see your money grow. In 10 years, your $5,000 has a good chance of more than doubling to $12,000 with a mutual fund that grows annually at 9%.