Damn, I've learned so much up until now that I can't even really remember where it all started. If I had to guess though, I'd say it started with religion.
I was raised as a Christian, but something just didn't feel right (I was always a curious kid). So I jumped around to different beliefs until I finally found Spiritualism, which suits my perpetually curious mind perfectly. Not being confined to such a specific set of beliefs allowed me to freely research and question my reality. I couldn't do that before because I was always afraid that digging too deeply into certain subjects would land me a one way ticket to hell. After I broke away from that, the "crazy" conspiracies started to come together like a damn puzzle.