If I hope I'm not misunderstanding, do you mean "How can we start with $10 in crypto investment?" because if that's the question you meant, then I will say that exchanges are the best platforms to start with such low investment capital like "Binance, Luno, Remitano & Coinbase" which accepts direct deposit of fiat, and then that fiat currency can be swap into any coin of your choice (e.g BTC, ETH, USDT & XRP). Because right now, I uses "Remitano"and it has been a wonderful 3yrs experience using that exchange to sell my Bitcoin into fiats in less than 5 minutes. So you can equally go check out if it's available in your country.