A faith has prophets who articulate the core principles and lay down the law. These prophets are revered. A faith has an overarching authority who resolves all problems for the believers. It is not hard to find any of these elements among true believing Libertarians. Only one core principle is necessary to qualify you as a Libertarian.
Less government is better .
All other principles are variations of this one. The Libertarian Party states the principle somewhat differently, as a prescription against violence, but they quickly twist this to mean less government by asserting that all government is violent. It is better to have a pipe in your mouth when you say this one. It will seem more scholarly. All taxation is bad.