In this video, using Ron Paul's own words from his books and interviews, it is shown that Ron Paul's goal is voluntaryism. He adopts limited-government positions and appeals to the U.S. Constitution as part of a long-term strategy for achieving a completely free society, absent any State.
I always had a libertarian bent, but "America's Great Depression" by Rothbard was the book that made me self-consciously libertarian. Interestingly enough, it didn't do it right away. I read the book in high school on someone's recommendation. Not the kind of thing I normally read...