The default setting at Betfair is for the odds to be displayed in decimals rather than fractional odds like traditional UK based sportsbooks. Luckily Betfair sportsbook offer a handy conversion tool that allows you to see both versions of the odds at the same time allowing you to get used to the format. If that's not enough there are tons of excellent tutorials that explain everything there is to know about betting at a betting exchange like Betfair. The actual Betfair sportsbook website has improved beyond all recognition since it's first inception in 2000 and is now more intuitive than ever. Betfair's current website is clean, easy to navigate and clearly leads the way amongst online betting exchanges. If you're looking to bet on the World Cup via a betting exchange you'll not find many better than Betfair.