Atlas if you must. The Fountainhead is Objectivism for 11 year-old girls.
If she's assigned reading for you, guess you don't have a choice. If you're just curious about libertarianism, skip her and read Hayek's "The Road to Serfdom," Hazlitt's "Economics in One Lesson," or anything by Thomas Sowell. Or if you want fiction, read Brave New World, Animal Farm, or 1984. Really, any dystopian literature that isn't by her. The V for Vendetta graphic novel is supposed to be great too.
Rand has the subtlety and philosophical mind of Sarah Palin. I guess she writes better, to be fair, but she still EMPHASIZES WITH CAPITAL LETTERS, like a child wishing someone a happy birthday.