W,A,S,D (in main game) - Move The cursor (@) around the screen
W,S (in menu) - Change which building is selected
M - Open the menu / Close the menu
B - Build whichever building is selected in the menu
R - Remove whatever building your cursor is over
Buildings placed next to each other will automatically transfer items between them. Place buildings in a way to create a supply line that ends with your goods being sold for money! Use the money to make an even bigger supply chain!