Could someone explain to me a method of trading price on the emini S&P using I assume support and resistance from the overnight numbers from what I have read? I see where some just trade price, no indicators, and would like to know how to do it. What are the triggers for taking the trade as the price reaches the pre-determined levels when using only price and no indicators? How does one come up with the resistance/support levels for the overnight numbers? Is it from the time the market closes in the afternoon until it opens the next morning?