ok bascially you bet on sports tournements. This is going to be a very simplified version of what to do, it is never this simple

Imagine there are 32 teams in a tournement. It could be any tournement, of any size, aslong as there are at least 3 rounds of matches. It can also be any sport.

Now the odds of a team winning is 32/1 (remember very simpliefied) and the odds of a certian team losing is 1/32

so if you bet £1 on a team winning, you will get back £33 if they win (as you always get your stake money back)

Now the next round, the odds of a team winning is 16/1 as half the teams have been knocked out. The odds of them losing are 1/16

After the second round you bet £27, if they do lose the tournement, you will get back £29.75 as remember you get your stake money back.

So, if the team wins, you will get back £33 and if they lose you will get back 29.75.

The total cost of placing the bets is £28, so you will make profit wether or not the team wins the tournement.

The trick to this, is to pick a team in the first phase, that is definately (never 100% certian, but its quite easy to pick a team that will qualify to the next round
if you do abit of research). Just make sure you bet on them to win the tournement.

You can also bet on multiple teams in the same tournment, aslong as you are sure they will qualify. You can also use different betting sites.

There is actualy alot of maths and work involved in doing it, but if you can be bothered to work out odds all day, you can make alot of money.

Back in the day, this system was mostly unknown, and hardly abused, but now alot of betting sites have made thier odds harder to play. You can still do it, but you will never
win as much. So it takes longer. This is why I decided to get a proper qualification so I can get a more serious job. That and sitting round on your arse all day gets boring.

But yeh, aslong as the odds change after the second round (whih they 99.99% of the time will) then you can make a profit, however much it will be.