In the future, if you are an employee in the United States, there is a strong probability that you will be presented with an employer-sponsored retirement plan such as a 401(k), 403(b), or some other similar program. The vast majority of these plans use mutual funds as their investment vehicles. For this reason, it is important for you to understand mutual funds, even if you hire someone to make your mutual fund choices. This session introduces the basics of mutual funds. In later sessions, we will discuss fees and costs, types of mutual funds, and choosing a mutual fund.