I recently bought and planted a reliance dwarf peach tree. I have no experience with fruit trees and was hoping to get some advice on how/when to prune it. Here are some pics:

http://imgur.com/a/lETXo

There are cuts indicating its been pruned by the nursery at least once before (maybe last spring?). The tree is planted only a few feet from a fence on two sides and then I have raised garden beds on the other side. So basically, I don't have a ton of space and can't do the traditional peach pruning method which seems to be choosing 3-5 scaffold branches and keeping them at a 35-45 angle. Not sure where to start, any advice would b appreciated!