If you're really curious, there's a short and free comic book based on her life offered in the app Comixology.
I don't consider myself well versed with Ayn Rand at all (I haven't even read Atlas Shrugged.) Though I think it may have something to do with her views on capitalism and personal independence. There was a time when Hollywood thought that capitalism was evil and communism was the way people should live. Ayn Rand thought this was horrible because she saw how people had been abused in the name of the "collective".
She thought that a person deserves whatever profits come from their genius and innovation. It should be theirs, and the government shouldn't force them to do anything with it or abridge it. She was also into free love and stuff.
What thing that I found interesting in her philosophy is: no true contradiction exists in the universe. I think that's really something to think about and possibly internalize.