For economics, since you’re probably just starting out here are some fast reads/listens:
Tom Woods: Monetary Lessons from America’s Past http://www.youtube.com/watch?v=91OIBnrjzLU
Irwin Schiff’s “How an Economy Grows and Why it Doesn’t” http://freedom-school.com/money/ (second link from the top)
Lilburne’s “Human Action Comics” http://picasaweb.google.com/Lilburne2
Then onto the books: Henry Hazlitt’s Economics in One Lesson, Thomas Woods’s Meltdown, and Gene Callahan’s Economics for Real People
Eventually the book to read is Mises’s classic tome Human Action
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For political theory, check out Anarchism to Minarchism in Ten Easy Steps From Minarchism to Anarchism in Ten Easy Steps: A Guide for Constitutionalists
If you don’t like the natural law arguments, instead of Rothbard’s For a New Liberty, David Friedman covers similar ground in The Machinery of Freedom, but from a consequences-based - rather than objective ethical - perspective.
If you’re not sold on the whole anarcho-capitalism idea, check out John Hasnas’s works on common law, starting with The Obviousness of Anarchy (best article on political theory I’ve ever read). It really amounts to the same, but the argument seems far more realistic.
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For history, I don’t have enough knowledge to recommend anything. I like Tom Woods a lot, but I’m sure others can give good recommendations.