I recommend starting with "Philosophy:Who Needs It" which is only indirectly about her philosophy but more about why everyone needs and has some kind of philoso

I recommend starting with "Philosophy:Who Needs It" which is only indirectly about her philosophy but more about why everyone needs and has some kind of philosophy (i.e. integrated view of life) whether they explicitly identify it or not. Second book would be "The Virtue of Selfishness" where she challenges the 2000 year old ethic that selflessness and sacrifice are good and argues that selfishness (properly defined) is good and a fundamental virtue for a rational man. NB: One caveat, she is chronically smeared by her enemies and her ideas are almost always misrepresented in today's world. For example, she is commonly accused of being a hypocrite for accepting social security and medicare toward the end of her life despite advocating against those institutions. She clearly explained the moral principles involved in her essay "The Question of Scholarships". So I highly recommend that you do not accept other's interpretations of what she said or meant without reading her ideas for yourself, firsthand.