The Black Stars have began their activities in Brazil with a lecture from FIFA's referee department this morning.

The purpose of the lecture was to educate players on the rules of the game and help make the World Cup clean.

Coach Kwesi Appiah and his 23-man squad touched down in Brazil on Wednesday June 11 and will resume training this afternoon.

Ghana will kick off their campaign in the tournament against USA on Monday June 16 at the Estadio das Dunas in Natal.