If you want to learn about the basics of Austrian economics relatively quickly, I highly recommend "Meltdown" by Thomas E. Woods. The Austrians (and they're not really Austrians, by the way) have predicted just about everything that's happened in the economy since the Great Depression, including the recent housing collapse (see Peter Schiff's Mortgage Bankers speech in Nov. '06).
Tom Woods also has an excellent resource page on his site. Many of the books listed you can download/read online as PDFs. "Economics in One Lesson" by Henry Hazlitt and "The Case Against the Fed" are a couple of my favorites.