How old were you?
What was it about? (or still is?)
How did the story? (If it did?)
I was 18. Started a travel startup Cultree - "Meet the locals" concept. Learned a whole lot, esp about Growth Hacking having $0 budget on marketing. Made some revenue.
Shut it down since it was taking lots of effort making it up and running and generating leads compared to most of tech startups.