Advanced blackjack technique 

If you think that you’re not a blackjack rookie anymore then you should start learning advanced techniques. Blackjack card counting is such technique. By learning the technique of counting you will have the odds with you.
The basic concept of blackjack counting is that a deck filled with 10s and aces will be to your advantage. At the same time, if the deck of the dealer is filled with smaller cards it is to the dealer’s advantage. So it’s that simple - when deck is to your advantage bet maximum, when it’s to dealer’s advantage bet minimum.
When a deck filled with 10s dealer’s chances to get bust are high. You, on your side can just opt to stand. And otherwise, a deck filled with smaller cards makes the dealer’s chance to bust less. If you know the deck is filled with 10s or smaller cards, this can give you the advantage of knowing what
strategy to use.
The dealer must then always hit until having a soft 17. To hit with a hand of 10 & 6 and knowing the deck is filled with 10s is a bad idea.
Your chances to hit blackjack are high, if the deck is filled with aces. In case the player has blackjack , the pay off odds are 3:2. In this situation dealer can only win if he also gets a blackjack. That’s why a deck filled with aces is always to the player’s advantage.
Blackjack counting is not done by memorizing each card that has come out of a 6 deck shoe of cards. People who are able to do that should immediately contact Guiness Records administration to commit a record.
Assigning the different card numbers with different point values - that is how blackjack card counting is done. You should choose a system that is easy to remember. By doing this you’ll save your nerves and your money, because you will lose less money.
So, you should assign a point value for each card and you will have to add the value of the cards that have come out. This is called the running count. Based on the plus/minus strategy. here are the values assigned:

2, 3,4,5,6 = +1;
7, 8, 9 = 0;
10, J, Q, K, Ace = -1

The first card dealt is an ace, so we start by having -1. Then 6 is the next card dealt so we add 1. This makes the run count back to zero. Then a 3 and 4 follows, making the run count now 2.
After figuring the run count, you can try to figure the true count. You take the running count you have and divide it with the number of decks remaining from the shoe.
The true counts tell you the appropriate bet size and you can base your strategy from there.

strategy from there.