Understand the foundation, principles, and rights that govern the United States with this vital, unbiased, and comprehensive primer to the US Constitution.

With the Constitution being invoked more and more in American politics, it’s now more important than ever before that you understand the guiding principles and significance of the document that shaped American democracy.

Written well over 200 years ago, the United States Constitution has endured the test of time and remains the document that defines federal law and policy in the United States. US Constitution 101 explores the construction of the American government as it was laid out in the Constitution, delving into the rights and liberties granted and protected by the document through a detailed examination of each Article and Amendment. From the Preamble to the 27th Amendment, this primer is packed with information about the document that has defined the American political and judicial systems for more than two centuries.

So, whether you’re looking for deeper knowledge about the rights and responsibilities of American citizenship, or just want to better understand the foundations of American democracy, US Constitution 101 has all the answers—even the ones you didn’t know you were looking for.

Tom Richey is an AP US history and government teacher with fifteen years of experience, that seeks to provide a thorough education to as many people as possible regardless of the quality of education available to them through traditional means. Richey takes his love of US history beyond the classroom, by sharing video lectures on his very popular YouTube channel, providing educational and entertaining content to his more than 200,000 subscribers. Richey also partners with Marco Learning, a site that provides high-quality resources to more than 200,000 AP students.

Peter Paccone is a social studies teacher with more than thirty years of teaching experience. Aside from his teaching, Mr. Paccone is also a blogger, keynote speaker, podcast host, teacher-conference presenter, and TED-Ed lesson developer. Paccone’s TED-Ed lessons “Why Is the Constitution So Hard to Amend?” and “How Do US Supreme Court Justices Get Appointed?” have gained popularity on YouTube. Paccone also serves on several teacher advisory committees (iCivics, WGBH, Council of Foreign Relations, and KQED in particular).