Queen's Pawn Game is a chess opening with the ECO code D00. It goes 1. d4 d5. White opens with 1. d4 (the queen's pawn) and Black answers 1... d5. After 2 moves it is White to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
In chessGM's opening book this position continues with 2. Nf3, 2. c4, 2. Bf4, 2. Nc3, 2. e4.
White opens with 1.d4 and plays a system without an early c4. It covers many calm setups like the Colle, London and Zukertort ideas.
chessGM has a full course for this line: open the Queen's Pawn Game course lesson.