PSA that Hillsdale College is currently offering free courses in 25 different subjects including:
1. The Great American Story: A Land of Hope
2. Constitution 101: The Meaning and History of the Constitution
3. The Genesis Story: Reading Biblical Narratives
4. Introduction to Aristotles Ethics: How to Lead a Good Life
5. The Second World Wars
6. Congress: How It Worked and Why It Doesn't
7. The Young Jane Austen: Northanger Abbey
8. Western Heritage: From the Book of Genesis to John Locke
9. Mark Twain: Tom Sawyer, Huckleberry Finn, and Selected Short Stories
10. Introduction to the Constitution
11. Theology 101: The Western Theological Tradition
12. American Heritage: From Colonial Settlement to Current Day
13. Shakespeare: Hamlet and The Tempest
14. The U.S. Supreme Court
15. Athens and Sparta
16. Public Policy from a Constitutional Viewpoint
17. An Introduction to C.S. Lewis: Writings and Significance
18. Winston Churchill and Statesmanship
19. The Federalist Papers
20. A Proper Understanding of K-12 Education: Theory and Practice
21. Great Books 102: Renaissance to Modern
22. The Presidency and the Constitution
23. Great Books 101: Ancient to Medieval
24. Constitution 201: The Progressive Rejection of the Founding and The Rise of Bureaucratic Despotism
25. Economics 101: The Principles of Free Market Economics
All of these classes can be found
here. I actually just started Constitution 101, each lecture is a 30min video but it's not boring. The lecturers are engaging and the setting within which they're teaching isn't bland at all (the opening lecture for that course is taught by Larry P. Arnn, President of Hillsdale College and he's sitting in what looks like an 18th century reading room so it draws you in).
If you haven't heard of Hillsdale College it's one of the best conservative colleges in the country, if not the best.
All you have to do is sign up and then you're free to choose as many courses as you'd like to learn from. It's good stuff!