Help to compile a list of resources (preferably free) about non-authoritarian political thought. If you want to see something added, make a thread to discuss adding things to this list and I'll edit it in here if it's good.

Our list so far:
Please note that inclusion on this list is not an endorsement of a work. What you do with this information is your choice.

The Online Library of Liberty
http://oll.libertyfund.org/
Find hundreds of writings, books, essays, etc. on classical liberal thought.

Mises Institute
http://mises.org/
Find dozens of free books, audiobooks, and lectures on libertarian thought from an Austrian school perspective.

The Anarchist Library
http://theanarchistlibrary.org
A massive collection of anarchist literature.

Under Construction - Help build this list!

General Resources
Project Gutenberg
http://www.gutenberg.org/
A compilation of free, out-of-copyright books and texts.

Librivox
https://librivox.org/
A compilation of free, out-of-copyright audiobooks created by volunteers.

iTunes Podcasts
History: https://itunes.apple.com/us/genre/podcasts-history/id1462?mt=2
Government & Organizations: https://itunes.apple.com/us/genre/podcasts-government-organizations/id1325?mt=2
News & Politics: https://itunes.apple.com/us/genre/podcasts-news-politics/id1311?mt=2
Find podcasts with ease through iTunes. Listen to them on the way to work, playing vidja, etc.

iTunesU
Use iTunes to navigate to the iTunesU section to have access to university lectures and programs.

Interesting Reading
Works that are not necessarily about liberty, but may be of interest.

Marxists Internet Archive Library
https://www.marxists.org/archive/index.htm
A massive collection of Marxist literature.