blackjack cards worth

How can you count cards in blackjack? (Please answer if u know anything about this)
Hi using the system, I know 1.6 is a value of 1, 7-9 is 0, 10-ECA is -1 .. Can I keep running fine tell, I need to know how to turn this into account so that when played with only 1 game Card .. I also have to know what the actual number of media .. I mean know your number, but what does .. as if my true count is 2, what should I wait? … Please reply
its actually pretty easy, but u should ask someone better than Yahoo awnsers
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