Pot Limit Omaha is one of the major poker variants. Over the last twenty years it has increased hugely in popularity on both sides of the Atlantic. Omaha is a game where each player receives four hole cards (as opposed to just two at Hold'em) to complement the five community cards. This gives great opportunities for complex play and enables the expert player to outmanoeuvre weaker opposition. The pot limit format means that big bets can appear out of nowhere and this gives opportunities for skilful players to apply pressure with bluffs and semi-bluffs. Written by a world class Omaha player, it offers help to those players looking to improve their understanding of this complex game.