Well, in starting to trading it is better that we have a full knowledge about it. It is better that we are be much aware to it's system because as a matter of fact it is a very risky things. In trading, we need to have a positive set of mind and good strategy so we can be successful to our investment. We need to have a range of percentage so we can able to know it we already earn or not. In analyzing the price change, we need to be much alert in the cmc so we will be much updated in any changes that are happened.