First, start working your way through Forex Military School while learning on demo accounts. Although demo does have differences from live (psychologically, plus less slippage and requotes), you need to learn your way around trading without throwing money away.
As you progress through the later Chapters, Sive even talks about how to develop your own trading system and get it coded. Instead of relying on someone else's "sure to win" EA, you can get your own EA. Then you'll understand how it works and be able to tweak the settings as market conditions change.