The Hi-Lo Count is one of the easiest and most popular blackjack card counting systems available. It's a balanced count and also a single level counting system, which means that a 52 card deck will wind up with a total of 0 if you count through the whole thing, and no card is given a value of more than + or - 1.
The point values are distributed as per the table below:
Other card counting systems might provide a more accurate view of the player's advantage or disadvantage at any given time, but probably no counting system is easier than the High Low Count listed above. The Hi Lo Count is often recommended for beginning card counters because of its simplicity.