The most important thing for succeeding in betting is to understand how the bookies make their money. It will help you because you will understand how they decide what kind of odds to offer and where their weaknesses are.
Here I will explain it in a few words. The bookies win money in betting by a thing which is called margin. Many people believe that the bookmakers make money from the loss of the players, but it is not 100% correct.
The margin is the evil thing and the bigger the margin is, the bigger the winnings for the bookies are. What is a margin in betting?
Let’s take a game from England’s Premier League, for example Arsenal against Chelsea on Emirates. Have a deeper view on odds for more and less than 2.5 goals in the match. They are similar – 1.91 per each option.
So, let’s make Pete, who loves betting on matches with many goals, bet for more than 2.5 goal on this match and Mary to make the opposite – to bet for less than 2.5 goals in the game between Arsenal and Chelsea. Let’s make them bet ten pounds each. 
So, we have 20 pounds bet on the goals of this game and we have 20 pounds in a bookie’s pocket.
The game finished with no goals and Pete lost his money but Mary won. The bookmaker is giving her 19.10 pounds which is fine for her. Pete doesn’t take anything. Let’s make a recapitulation.
There are 20 pounds which has been bet and the bookie returned 19.10 as Mary’s winning. The bookie has earned 0.9 pounds and this is their clear win from the bets on this game. This is the margin and this is how the bookies win on betting.
All that the bookies should do is to push the punters to have almost equal amount of bets on every sport event. They are making this by changing the odds. When many people bet on over for Arsenal – Chelsea’s match, the bookie increases the odds for under and people start betting on under.
Here is our chance. To find the perfect moment when we would have a great odd for our betting prediction and make the bet on better odds.
Here is a video with another explanation about how the bookies make money.

