The biggest power that 15 years old have is time.
You kids can be rich beyond your wildest dreams, quite literally, if you start investing early.
It may seem like a lot, but invest $100 a month into a high performance investment, and you will have millions of dollars when you retire.
I got $3k usd in Bitcoin today, do you have any ideas? I'm considering using social media or pay per install with Facebook ads to make some more money but you seem like you know what you're talking about