On Rand's Introduction to Objectivist Epistemology (1967) and "The Objectivist Ethics" (1961).
First Rand grounds everyday human knowledge, largely by dismissing the concerns of other philosophers (even those whom she unknowingly parrots) as absurd. Then she uses this certainty to argue for her semi-Nietzschean vision of Great Men who master their emotions and rely only on themselves.
The Partially Examined Life Philosophy Podcast