Sad apple tree
After several years of neglect I'm ashamed to say one of my apple trees looks like this (same tree, from three angles):
Where do I even start with trying to sort out the tangle of crossed branches?! I've read that apple trees should be gradually reshaped over a few years but I don't know how gradually! I don't know what kind of apple tree it is; eating rather than cooking with green and rosy skin.