If you want to learn about anarcho-capitalist thought, a good place to start is Murray Rothbard's ["Anatomy of the State"](https://mises.org/library/anatomy-state) for a short and powerful anarchist case against the State, and his positive ancap manifesto ["For a New Liberty"](https://mises.org/library/new-liberty-libertarian-manifesto). Hans-Hermann Hoppe's "Democracy: the God that failed" is great too.