Is he gelded?
I would suggest to go to library or even on Youtube and look for training techniques. People like Clinton Anderson and such are a wonderful source of info. On here all one can do is read, it's much better to see it in action.
Here's a link to get you started:
YouTube - clinton anderson colt starting.
Also, Western Horsemen and Cherry Hill have some excellent books.
PS: Are you planning on moving him to were there are other horses? Being alone isn't that great for their mind.