I've been using both of them, started with their demos of course, loved ctrader with pepperstone & getting better spread & commissions with fxview.I think almost all brokers have a demo account option. I would pick a broker for demo trading who has solid trading conditions (fees and spreads) after all that is what you will be progressing on to. From my experience, these two are good to try hands for demo - Fxview and Pepperstone. Both of them are pretty good for a start.