Keys to Investing for Retirement The slideshow presentation that you would like to view is too large for your current screen resolution. Click here to view to view the slideshow at full resolution. Launch Presentation » Share | Have A Question About This Topic? Address Thank you! Oops! Related Contents Should You Invest in Exchange Traded Funds? There are hundreds of ETFs available. Should you invest in them? The Anatomy of an Index The S&P 500 represents a large portion of the value of the U.S. equity market, it may be worth understanding. 5 Smart Investing Principles Principles that can help create a portfolio designed to pursue investment goals.