I guarantee that even if you're already very knowledgeable of the Constitution, the Bill of Rights, and American History, you can still learn new things about them from this lecture series. I did. These are some of the best videos on these subjects because it's straight forward & easy for sheeple and the average person to understand. It is taught by Michael Badnarik.
There are 7 parts each split into 50 minute to 1 hour segments