Basic rules in forex trading is to know general things about forex market, currency pairs, trading platforms (such as MetaTrader), technical analysis and chart patterns, candle, some important and useful indicators such as Bollinger Bands, MACD and RSI, and other. You should choose a trading system based on what you have learned. You should stick to your trading system and should never try a new trading system in your daily life. You should stick to the demo trading with your trading system until you find yourself quite experienced with it. You must be able to distinguish the signal strong and sharp. You should be able to see the exact entry point and a great place to stop loss and target. And this means that you should be able to make profitable trades for several months in a row. Which can be considered as the final stage of demo trading. after that you can just do the next step by opening a live account and start trading with it.