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

hahaha good advice, I was reminded of the story of athlete from america (forgot his name), he was told by his father to sell used clothes at a price that expensive, smartly, he asked an actress / actor to put a signature on the clothes and then he managed to sell it with an expensive price, amazing!