Move your mouse side to side on the screen to position your player, and then press the left mouse button key to shot the hockey puck. On the right down corner of your screen a beer will be displayed. That beer is your power meter. As long as you keep pressed the mouse button as much that power meter will grow and your puck will have an extra speed. Also be careful, because if you press your mouse button too long your power will decrease and your puck will go slowly on the ice.