A bit of simple math will show you that there are, in a complete
deck, an equal number of "plus"-valued cards and "minus"-valued
cards. This is called a "balanced" count and since all cards are
valued either 1 or 0, this is also a "single-level" count.

The Power of Card Counting
The Hi / Lo count recognizes that the cards 2 through 6 are of
greatest value to the dealer, since these cards turn the dealer's
"stiff" hands (12 - 16) which s/he must hit into good hands. For
example, a 5 turns a dealer's 12-16 into 17-21, consequently it is
the most important card for a dealer. On the other hand, an Ace is
most important to a player, since it's the key component to a
"blackjack" which pays 3 to 2. So, as "little" cards are played,
they are no longer available to the dealer and since there are an
equal number of plus- and minus-valued cards in the deck, a "plus"
count tells us that there are a higher proportion of tens and aces
left in the unplayed portion of the deck. This situation is
favorable for the player since the chances for a blackjack have
increased and doubling or splitting situations stand a better chance
of receiving a high card.
Of course, a dealer has the same chance of receiving high cards as
you. But remember that the dealer does not receive 3 to 2 for a
blackjack, may not double or split and must hit 16 or less. Also, as
you will learn in a later lesson, knowing the proportion of
10-valued cards in the decks gives you the knowledge to make
profitable insurance bets.

Learning The Point Values
This is the only exercise you will ever need to learn the point
values of your counting system. It's the one I use when I'm
switching counts for a single-deck game or back again to the one I
use for multi-deck games. Just take a deck of cards and begin
turning them over one at a time and recite the point value of each
card. If a card is a plus-value, I don't say "Plus 1"; I just say
"one", because it implies "plus" anyway. If a card is a minus-value,
I say "M 1", not "minus 1" because it saves a syllable. For the
"neutral" or zero-value cards, I say nothing -- they are completely
ignored for counting purposes with the Hi / Lo system.
So, how does this look? Here's a quick example
| Ace |
(M-one) |
| 9 |
|
| 5 |
(One) |
| 6 |
(One) |
| 7 |
|
| King |
(M-one) |
| 2 |
(One) |
| 10 |
(M-one) |
Notice that I'm not keeping track of the cards, but merely
stating the point value of each. You must practice this until
you have the point values firmly implanted in your mind but don't
worry, it won't take long.

Single-Card Countdown
If you feel you know the point values of each card in your system
of choice by heart, you may now begin to count down a single deck.
Simply remove any three cards without looking at them (to check
your accuracy) and set them aside. Now turn over cards one at a time
and keep a running total of their values. Remember your old algebra
classes? If you add +1 to -1 the result is 0. That applies here, so
keep it in mind as you go through the deck.
Here's an example:
| 1st card |
Ace |
The count: M-one |
| 2nd |
King |
M-two |
| 3rd |
10 |
M-three |
| 4th |
6 |
M-two (make sure you know why) |
| 5th |
Queen |
M-three |
| 6th |
5 |
M-two |
| 7th |
3 |
M-one |
| 8th |
6 |
Even (I don't use "zero") |
| 9th |
4 |
One (again, no "plus") |
Got it? Good. You're not very fast yet, are you? Well, don't
worry about that; we'll work on speed later. When you've completed
the deck, the count should be off by the value of the three cards we
set aside in the beginning. Look at those cards, check your
accuracy, shuffle and begin again. Get into the habit of removing
three cards every time you do any counting exercises since they will
keep you from fooling yourself when you make a mistake.
For now the key is accuracy; keep at this until you can go
through a deck three or four times in a row without mistakes.
What you have learned here is called the "running count". Next time
we'll work on speeding up your ability to count; can you believe
I'll have you zipping through a deck in less than 20 seconds? The
babes really love that at parties...

Homework

Continue testing yourself on basic strategy by doing the Basic
Strategy Reconstruction and Basic Strategy Decisions
exercises. You won't win if you can't play proper basic
strategy.
Begin learning the point values of your chosen system and
when you know them by heart -- and only then -- start doing
single-card countdowns of one deck.
See you here next time. Practice!