The first time I heard about Bitcoin was because of all those Ponzi schemes and hype on social media. People close to me had also heard about Bitcoin, but we didn't pay much attention to Bitcoin time. Later, I heard that Bitcoin can make money, so I started to study it slowly.
I also got to know bitcoin through my local ponzi project, back then I only knew bitcoin as a way to participate in that ponzi project, I never knew it could increase in value over time. After losing all my bitcoins with those scam projects I just started learning about bitcoin. It can be said that I missed a lot of opportunities to own bitcoins cheaply and use them to participate in ponzi projects without knowing how valuable bitcoins are.