Some background first.
I have some understanding of training based on watching clinics and shows. I have been around horses and am comfortable with them. I currently do not own any horses and haven't rode much in the last ten years. Currently I volunteer at a horse rescue.
The rescue has a colt that I would be in the 7-10 month old range. When resued he had a pretty sever cut to his left front leg. That has healed, but is still seollen and scared, though it seems to not bother him at all. When rescued he wasn't halter broke. Now he is halter broke, but does at times get stubborn. When this happens I apply pressure with the lead rope until he gves, then reward him. He does at times seem rather pushy (I am working on that) and does not seem to understand when I want him to move off in either direction. He also seems to toss his head when you try to direct hinm with the halter and lead rope. He was somewhat difficult to catch, though he was full of energy and playing more than anything else I think.
My question is what excercises or training would you recommend for him. My ubderstanding is that it need to be in small inrements due to his age and attention spans. Last time I worked with him I would work for about 5-15 minutes floowed by grooming and taking him out to graze on some fresh grass. Any advice is appreciated.