for it says CTRL is the dismount button. to dismount that you have to go some where close to your destination ( room ) to dismount. then your off your horse!! hope that helps!!
When you are at the window you have to keep talking even though nobody can hear you. One day, Oliver will come and he will ask which controls to switch around and you have to put some logs on each...
You have to raise your horse's stats up quite high.Which means you have to care for it a lot and improve it's resistance, Skill and Jump. When you have enough stars then go to Luc and you have to...