This one is a bit different, you just have to buy and sell the shares at the right times to make the most amount of money. There's some stuff about getting extra money if your teams do well in the actual World Cup, the FAQ explains it all. I've set up a league it's called The FST Turkey League, post your ID number here and I'll add you to the league.
For some reason they seem to have left out Turkey, I was going to put all my money into them.
btw the ID number of your account can be found in the green circle(and elsewhere apparently, took me bloody ages to find it...):