1)Buy an apple for 1 dollar.
2)Then sell it for 2 dollars and buy 2 apples.
3)Repeat with 4, 8, 16, 32 apples and so on, until you managed to sell 3500 apples for 7000 usd.
4)Buy a bitcoin

Why would people buy an apple with 2 dollars? They can buy it at 1 dollar? This advice is useless, i guess so :p give him an advice about crypto would be great.