I think backtesting on historical market data is also important while choosing a strategy. This can help us to evaluate the effectiveness of the strategy in different market situations. Demo trading is a way to forward test the strategy in the real time market conditions. It is better if you can do both backtesting and forward testing to determine the viability of a strategy.
When it is time to invest a large amount we have to emphasis on broker regulation, after regulation system I will look for their despot and withdrawal system how it works. Most of the brokers right now are found to be scams. So, for ensuring a right Forex broker we have to be dedicated and have to pass enough time.
There are many trading strategies like chart index, fundamental analysis, technical analysis, scalping, or day trading. A trader can choose as per his experience and understanding in which he is comfortable.
Every trader has to find a trading strategy that suits them well. Finding the perfect strategy is not an easy task for a beginner. You must try out and backtest different strategies to decide which one would be ideal for you. But the most important thing to do here is expanding your knowledge and polishing your skills. The success of any strategy would also depend upon how well you can execute it while trading.