Use A and D or Left and Right arrow keys to move. You can use the Up and Down arrow keys to use switches. Coupling is automatic but in order to decouple press Space. Hold E for the whistle. Press Q for the bell.
In order to empty the hoppers line it up and put it in the rotary dumper at yellow area at the factory then uncouple and wait 5 seconds. In order to Load the hoppers line it up and put it under the loader at the mine then uncouple and wait 5 seconds. Switch engines by going on the turn table and pressing F. (You can pick between a M1, T1, Texas, Steam Turbine and K4) Have fun! :D