It all depends on how much time you spend in the demo market. The more time you spend in the demo market the more you know about the complex situation and it will have a very good effect on your live trading as well. You know more about the patterns that have occurred in the past and you will analyze them in the upcoming trade and forex trading market follows history for most of the time on the other hand the condition of the currency economy as a whole moves in the country but you can get a dirty idea about the market movement the future by looking at history, thank you.