D.E. Bishop suggests that I expound on Libertarian philosophy in her comment a few posts back. I think others are better equipped to do so than I am. I queried google for "libertarian books," and came up with a list.
1. Economics in One Lesson by Henry Hazlitt.
2. For a New Liberty by Murray N. Rothbard.
3. The Machinery of Freedom by David Friedman (Milton's son).
4. Atlas Shrugged by Ayn Rand.
5. The Virtue of Selfishness and Capitalism: The Unknown Ideal by Ayn Rand.
6. Capitalism and Freedom and Free to Choose by Milton Friedman.
7. The Law by Frederick Bastiat.
8. In Pursuit: of Happiness and Good Government by Charles Murray.
9. Libertarianism in One Lesson by David Bergland.
10. The Libertarian Alternative, collection of essays edited by Tibor Machan.
11. The Free Market Reader edited by Llewellyn H. Rockwell, Jr.
12. Libertarianism by John Hospers
13. The Freedom Philosophy, collection of essays published by the Foundation for Economic Education.
Of these, I recommend starting with Bergland's Libertarianism in One Lesson, first published in 1984, now in its 9th edition (updated to address issues that have risen since 1984).
Any of these is probably available on eBay for $5 including shipping.