You Would Rather Be... Full Size Version Share | Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Contents The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Four Really Good Reasons to Invest There are four very good reasons to start investing. Do you know what they are? Keys to Investing for Retirement There are some key concepts to understand when investing for retirement.