Hi Nevets - welcome to the exciting world of technical analysis (more like technical confusion when you start out)...
Knowing how to use Time frames effectively are a very important part of a traders arsenal and believe me there is an order to this... let me explain, to start off with, you must have a trading time frame that you stick to, in other words you always use this to enter your trades, lets say that this is a 10 minutes chart.
There are two basic requirements that must apply here- the first one is you must look at two or more higher time frames to determine the major move / trend, in other words this will prevent you from trading against the major move or trend on your 10 minute time frame.
The second one - is before you place your trade on the 10 minute chart you must look at a lower time frame for confirmation and timing of the entry.. a classical example from my trading experience a "retracement " (in an uptrending market) on a 10 minute trending chart can be confirmed, and will show as an "oversold signal" on a 5 minute chart.
In other words the 5 minute chart has confirmed that this is a retracement and the up trend will continue (with the highest possible probability)!
Take a peek at my web site for more of an insight on time frames
All the best with your trading
Joe
Stock Market Trading, a Powerful Profiting Strategy