Don’t let all the financial jargon stop you from embracing the best wealth building tool: Compound Interest. Investing has never been easier or cheaper for the small investor. Several funds have $100.00 minimums if you add a monthly contribution of $25.00 dollars. Charlie Munger of Berkshire fame was recently quoted that small investors don’t need to understand investing… pick a low cost index fund and add to it every month. A dollar a day over time can make anyone wealthy.