Here are a few of the most popular betting types

Outright Winner : This betting variant requires you to predict the winner of a tournament.
Match Winner : This betting variant requires you to predict the winner of a match.
Over/Under : This betting variant requires you to predict whether an event (e.g. total score, total corners) will take place, Over/Under a number, as is specified by a betting site.
Totals : Totals require you to predict the total number of a particular event, which will take place in due course of a match.
Handicap : This betting variant entails handing a weaker team an event-based advantage, while handing a stronger team an event-based disadvantage. In essence, a stronger team starts a match on the back foot, and must overcome the event-based disadvantage, while the weaker team must maintain its given advantage.