The Queen is the most powerful piece in chess. It can move like the Rook and Bishop combined. This means it can move forward, backwards, and diagonally as many squares as it would like. The Queen also attacks the same way it moves.
When setting up the chess board, the Queen goes next to the King. I have kids remember that the Queen likes to match, meaning the black queen matches with the black square and the white queen matches with the white square. The Queen always goes on the d file. For white the queen goes on d1 and for black the queen goes on d8.