The Foreign exchange market is the biggest financial market in the world. At least four trillion dollars is traded on currency markets on a daily basis. This market is known for its volatility and high risk nature, which is why it is mostly traded by banks and big corporate. However a young South African trader has managed to crack it. Sandile Shezi has successfully learnt how to trade currencies and at just 23 he's become one of the youngest multi-millionaires in the country. Shezi now wants to empower other young South Africans to do the same. Sumitra Nydoo caught up with him.