Learning Free Market Economics?

What would be a few good books to read in order to get an introduction to free market economics?

Economics in One Lesson by Henry Hazlitt

pdf - http://www.fee.org/pdf/books/Economics_in_one_lesson.pdf

Beginner’s Guide (selected lectures from the Mises Institute)

http://mises.org/media/category/202/Beginners-Guide

http://www.vforvoluntary.com/young-economist/