I am leasing a 5 yr old fjord named Evanesco. He's sweet as can be, but he hasn't had much training and was used as a husband horse before I got him. He's okay on trails, but I want to be able to jump and do a little dressage. Evan gets distracted easily, and doesn't know how to canter. When he gets bored, he gets extremely stubborn and naughty. He'll ignore my aids and get fast. Like most horses, he has his good days, but most of the time he is hard to ride and it's just not much fun.
Does anyone have any suggestions or exercises that could keep Evan entertained and help with some simple training?
PS: There aren't any experienced horses that I could use to get a feel for things, and I only have access to a medium outdoor arena (which I don't feel completely comfortable with Evan outside yet) and a small (about 1/3 of a full sized arena) indoor arena.