Here are a few other options to learn more about libertarianism and to find more perspectives of libertarians.

The Libertarian Party (LP)

LP.org – The national Libertarian Party website
LP of Montana
LP of New Jersey
LP of Pennsylvania
LP of Wisconsin
Links to all state Libertarian Party websites

Institutions of Libertarian Thought

CATO Institute – http://www.cato.org/
Institute for Humane Studies – https://theihs.org
Institute for Justice – http://www.ij.org/
Ludwig von Mises Institute – https://mises.org/

Libertarian Youtube Channels

Institute for Justice – https://www.youtube.com/user/InstituteForJustice
Learn Liberty – https://www.youtube.com/user/LearnLiberty
Reason TV – https://www.youtube.com/user/ReasonTV
Cato Institute – https://www.youtube.com/user/catoinstitutevideo