Books
Do you own The Vegetable Gardener's Bible? The hot-off-the presses companion volume is The Fruit Gardener's Bible, with info on everything from pollination to pruning. If you're growing fruit trees in California you should own The Home Orchard, written by Chuck Ingels (Farm Advisor in Sacramento) and others from the University of California Agriculture and Natural Resources staff.University of California Fruit Tree Pruning
The University of California provides information to county Farm Advisors and Master Gardeners all over the state. Here are some of their helpful links for your backyard orchard: The Cooperative Extension for Sacramento County outlines Training and Pruning Fruit Trees. University of California, Davis provides a guide to Fruit Trees: Planting and Care of Young Trees. Do you have a mature fruit tree that needs reshaping? Find out how to address that tricky problem with another publication from the University of California, Davis -- Fruit Trees: Pruning Overgrown Deciduous Trees. These are good guidelines, but if you're outside of California and curious about the particular advice for your area, contact your local Cooperative Extension (Farm Advisors and Master Gardeners).