Apple Tree Pruning

This is the apple tree I inherited, when we bought our house. It does produce fruit, but definitely nothing you would like to eat.
I have read a little bit about pruning and it supposedly helps the tree produce better fruit, but everything I have found seems a little vague on how to actually prune the tree. I have read that you are supposed to do it after the tree goes into hibernation...but I have a hard time telling when that happens except in the dead of winter, when there is 2-3 feet of snow on the ground.
Can anyone give me some ideas or suggestions regarding this?

 

We have a few apple trees that have been here a long, long time. Even before there was a house here. We get apples every year but like yours, none we'd eat. We were told several years ago by a tree guy, that apple trees need to be pruned every year and fertalized twice a year to produce good fruit. Well, we only had ours pruned and fertalized that one year so our fruit is still not edible so I"m not sure if that works or not. Maybe you could contact a real apple farm in your area and see what they might do to their trees. Good luck.

 

Thanks for the replies. One of your links will come in very handy this fall I think Eileen. They tell me exactly what I was looking for.