How can I tell which branches to prune off for a pear tree for fruit next year.?

I don't want to cut all the wrong branches off. I did it to an apple tree and went from 360lbs one year to no apples the next. The neighbor had apples both years.
How can I tell which branches to prune off for a pear tree for fruit next year.?
Sounds like you need a good pruning book. But here are a couple good starts:

http://hgic.clemson.edu/factsheets/hgic1...

http://ohioline.osu.edu/hyg-fact/1000/11...