Here are some links to downloadable resources about how to correctly plant trees so they survive in until next year and for the long run. Note how important it is not to overwater (yes!) and not to add very much new soil to the planting hole for a new tree (use the soil that was dug out of the planting hole)
CSU Garden Notes Tree Planting Steps and The Science of Planting Trees, the most complete
CFS Planting Tips site
Carol O’Meara is an expert at CSU Tips For Successfully Planting Young Trees in Colorado
A good video from CSU How to Plant a Tree in Colorado
CSU Garden Notes Care of Recently Planted Trees