Dennis Prager, a well-known rabbi, has produced a series of videos explaining the Ten Commandments (be sure to click on [CC] to see the words while you watch):
What are the Ten Commandments? How have they helped to create a secure and prosperous society? Please watch these eleven videos (the first one is a general introduction to all ten videos) and think about the questions that follow. Best of all, try to discuss them with a traditionally-minded religious Jew or Christian (leftists and atheists will do their best to deny the validity of the Ten Commandments and attack anyone who dares to mention them in public).