There are a lot of investment choices out there. Stocks, bonds, mutual funds, and the list goes on. Most of us are somewhat familiar with stocks since we hear about the markets on the news all the time. But what about bonds? If you have a retirement plan, chances are you're also investing in bonds. So, what are bonds, how do they work, and what place do they have in your overall portfolio? Get a crash course in what bonds are and how they work.