Hello, if there are professional traders here who can help a newbie, please say how the back test should look like? I mean what period should we take. I heard that even 3 years of backtest isnt enough. And I also heard that some people were profitable using a strategy for 3-4 years and after 4 years burned their accounts. and another thing taht is important - is a programme used for backtest, because I heard that some programs can not give accurate backtests. thanks for all replies.