I made the same journey! Was very libertarian even as a young adult, but was disillusioned by the Advocates for Self Government, who didn't advocate much at all to others, just sat there talking amongst themselves.

In 2012, I held my nose and registered Republican, to support Ron Paul. (Don't care how I'm registered now, as I'm no longer voting.) Not long after that election I "graduated" to anarchy. Not sure about agorism, so I did a search and found this enlightening discussion: https://dailyanarchist.com/forum/index.php?topic=7.0;wap2

Thanks again for broadening my horizons! :)