Demo trading is important if you know how to use it. No matter you are new or old traders. If you are old traders you must know with a single strategy you can not make profit all the time. We need to change according to the market condition. To test your strategy demo account is the best place. You can't lose money by testing on live account. For demo trading a good broker is also important. A broker whose demo price is well synced with live market like Eurotrader broker.