We the People of the United States, in Order to form a more perfect Union, establish Justice, insure domestic Tranquility, provide for the common defence, promote the general Welfare, and secure the Blessings of Liberty to ourselves and our Posterity, do ordain and establish this Constitution for the United States of America. --Preamble to the U.S. Constitution.
-- (source: Today In History, accessed 9/17/18)
Visit the Constitution Center online. The National Constitution Center is an excellent non-governmental resource that was created by the Constitution Heritage Act of 1988, signed by President Reagan. Although it sits on federal land, it is privately run.
Want 10 Fast Facts about the Constitution? (from the Constitution Center)
Explore freedom of religion, freedom of the press, freedom of speech, freedom of expression, and freedom of assembly in the context of landmark and current court cases, current events and more.
View The Constitution of the United States of America: Analysis and Interpretation (Centennial Edition, 2013) (opens PDF document, 2800+ pp.)
The CONAN has evolved from the very beginning as the need was then recognized for a comprehensive guide to our nation's constitution. This guide continues to grow with Supreme Court interpretations of constitutional law.
The Library of Congress offers a free mobile search app to the CONAN.