If you want advice from the son of an orchardist, I'll give you what my dad gave me.
Leave it alone for now. You can feed it with some all-purpose fertilizer if you want.
In January (here comes the hard part) stand a yardstick next to the trunk. Cut right above the top of the yardstick. What you have left is the trunk and maybe one branch. If the branch you have is about a foot below the top bud you can leave it on. If it's closer, prune to that branch. You now have a trunk and uppermost scaffold branch.
As soon as new growth starts begin feeding on a schedule of your choosing. Many sources recommend no fertilizer for the first year or two. I recommend feeding the crap out of it to get the biggest tree you can in the shortest time possible. But I'm a pig.
For some other excellent advice check out Dave Wilson Nursery. They grow a huge assortment of fruit trees here in California and have great videos.
