LewRockwell.com has resources on Murray Rothbard that can help you. Before reading each book he wrote, you should consider reading his shorter publications.
Do not exclude other libertarians from consideration. While libertarians may make the same arguments, they can make them in different ways (complex or simpler, shorter or longer, historically-based or theoretically-based, etcetera).
I recently read Viception which I thought was an excellent defense of liberty. It is an easy to understand book. Here is my review of it.