Key information - previous high, low, open, close

Hi,
there are a lot of informations to use for trading, some need research and some are just in front of us.
I am talking about previous high and low with its opening and closing price. You can see that on a candlestick and it doesn't matter the timeframe.
Some traders use this informations to take decision, to their strategy or so.
What would you do with these informations? or, How would you use these informations?

Alex

Any ideas? ​

well , its of great importance to have a "road map" in front of you and wait till price moves towards certain levels u allready drawn in advance
and wait and see how price trades towards those levels of interrest and how price behaves at those levels...

there are only three things that can happen at those levels , either a reversal , a breakout , or a retracement...

i empahsize , to trade in foresight ie. mapping the terretory before u begin your trading day , and judge the markets action @ the levels you want to do business at...

the HLC .. may provide u these levels... however there is more to it then just HLC of a bar.... price is in a continous flow anyhow

but there u go..