The avatar is something I picked up from another forum, I just liked it:P
For your first foal, I think its a good breed to start with; overall, they are very people-oriented and calm natured, though youngsters will still be youngsters and some are hotter than others (Tsjerk offspring seem to be like that a lot). But overall, a very forgiving breed.
Breed-specific things you want to focus on in training include teaching them about personal space...they have no sense or respect of it, and they want to get close to you all the time. If they are scared, they will often jump towards their handler instead of away. Also, they tend to be slower to react to signals and aids...not like draft horses, but not as quickly as your average warmblood either. So excercises to keep them mentaly agile and quicker to react to pressure are good.