Learning to trim tree for beginners starts with one simple rule. Look for the three Ds: dead, damaged, and diseased wood. These branches need to go no matter what. You can't make a mistake removing them since they already hurt your tree.
I still recall my first time pruning trees on my own. I stood there with new loppers and no idea where to start. My hands shook a bit because I worried about ruining the tree. Then an older gardener told me to just find the dead stuff first. That advice changed everything for me.
A friend made beginner tree pruning harder than it needed to be. She tried to reshape her whole apple tree in one afternoon. By the end she had removed so many branches that the tree looked sad and bare. It took two years to recover from her eager first attempt.
Dead wood looks gray and brittle. Scratch the bark with your fingernail. If you see green underneath, the branch lives. If you see brown or nothing at all, that branch is dead. Damaged wood shows cracks, splits, or torn bark from storms or rubbing. Diseased branches may have cankers, odd growths, or discolored areas.
After the three Ds, look for branches that cross and rub against each other. The friction creates wounds where disease can enter. Pick the weaker of the two crossing branches and remove it. Leave the one that fits better with the tree's shape.
Water sprouts make good practice cuts. These thin shoots grow straight up from branches. They rarely become useful fruiting wood. Clip them off at their base. You get cutting practice without risking harm to the tree.
Step back from your tree after every few cuts. Look at the whole shape. Most first time pruning trees problems come from standing too close. You lose sight of the big picture. Walking ten feet away helps you see what the tree needs next.
Make fewer cuts than you think you need. You can always prune more next year but you can't put branches back. Start small and build your skills over several seasons. Each year you will gain more confidence and better judgment about what to remove.
Sharp, clean tools make all the difference. Bypass pruners work well for branches up to half an inch thick. Loppers handle wood up to two inches. A pruning saw tackles anything bigger. Clean your blades with rubbing alcohol between trees to stop disease spread.
Read the full article: Pruning Fruit Trees: A Complete Guide