The IRS offers a free online interactive program entitled “Understanding Taxes.” Designed in partnership with teachers for use in middle school, high school, or community college classrooms, the program can be used by anyone to learn about the history, theory, and application of taxes in the United States. It features 38 lessons on different aspects of the American tax system, including the basics of tax preparation, glossary of tax terms, and tax trivia. The program is available all year and there are no registration or login requirements so you can return at any time. The IRS generally updates the program each fall to reflect any updates to tax law and forms. You can access the “Understanding Taxes” program here: http://apps.irs.gov/app/understandingTaxes/index.jsp