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Ron Paul is basic schooling,. But also has a lot of great things.
http://www.ronpaullibertyreport.com/
https://www.libertyclassroom.com/faq/
This is Tom Woods has many links.
There is also https://liberty.me/
https://mises.org/about-mises
They have a lot of free material to check out and
http://www.learnliberty.org where everything is free and you can see your progress.
Best,
Jerry