Yes Henry Hazlitt's Economics in One Lesson is a great place to start.
http://en.wikipedia.org/wiki/Henry_HazlittAs you learn more you have to end up with Ludwig von Mises' "Human Action" you can download the text or and audio reading on Mises.org or iTunesU. It is his magnus opus on Praxiology, or the science of human action which Economics is a subset of.