Pruning young trees helps them grow taller, faster, and develop healthier adult shapes. This interactive video from the Arbor Day Foundation and the US Forest Service helps you learn why, when, and how to prune trees.
The best way to help pollinators is to provide more of the food that they need to survive. Native plants can support hundreds more species of pollinators than non-native ornamentals, so as much as possible, incorporate native plants into your garden and landscaping.
The first and most important step when taking on a tree-planting project is to choose the tree species that will meet your needs as well as have a good chance of surviving in the spot you intend to plant them.