Jurist Handbook for the Fully Informed Jurist
A must-read before going in for Jury Duty so you know your duty to determine the facts and Law of the case.
Also available in movie form, see 12 Angry Men (1957 Film)
The Bible
(IMO the best way to read the Bible is with e-Sword, as it gives definitions for each word)
The Declaration of Independence
Treaty of Paris (pdf)
The California Constitution
Today: https://leginfo.legislature.ca.gov
Original 1849: http://www.dircost.unito.it (pdf)
Washington's Farewell Address.
He had many words of advice and warnings of traps for the People, which we seem to have been walking right into ever since.
Lots of fantastic document (templates, if you like) put together by People.
Notice of Violation
Lawful Notice and Demand
Courtesy Notice
Notice of Default
Notice of Estoppel
YOU SHOULD HAVE AN UNDERSTANDING OF AMERICAN LAW AND DUE PROCESS a.k.a. The Law of the Land BEFORE ATTEMPTING USE THEM.
If you find yourself asking, "Can I use this / is there a template for [my problem]?" you are NOT YET READY. Keep learning. Group study is fantastic for this.
Another repository with a lot more great stuff is hosted on mega.nz
Good to read through the Notices. Also, many other good resources and reading is available on the website.