I recently came across a link to TheCapitol.Net website with information on how to request a free copy of the Pocket Constitution, which includes The Declaration of Independence, U.S. Constitution, and the Amendments to the Constitution. My Mom got similar guides for each of us kids years ago that we were able to reference in our studies. As a family we also went through the wonderful Institute on the Constitution lecture series, which helped give us a better understanding of the structure of our government and the intentions of our Founding Fathers.
Here are the instructions from the site about how to obtain your free pocket guide:
Single copies of this Pocket Constitution are available at no charge by sending a self-addressed stamped envelope (SASE) with first class postage for two (2) ounces to: TheCapitol.Net, Pocket Constitution, PO Box 25706, Alexandria, VA 22313-5706. Requests with insufficient postage will be returned or destroyed. Only 1 copy per request. Available while supply lasts. No phone, fax, or email requests will be accepted for complimentary copies.
Be sure to visit the website, though, for the most current information and to check out other related resources.