I think the risk will be bigger stocks comparing with bitcoin because once we got lost from stock, we are difficult to recover the loss. But if we get lost from bitcoin, we might have a chance to recover our loss. I prefer with trading bitcoin because it's beside trading, I can have an asset that could give a long-term profit for me if I can hold it. But maybe he can try to trade bitcoin and stocks so he can feel what the difference is and he can choose with a right.