Christmas trees are an important part of holiday celebrations for many people. Decide beforehand where you're going to display your tree, so you'll have a good idea about the size you'll need, and whether all of the sides will be suitable for viewing. A tree going into a corner, for instance, will only need three good sides.
Look for a tree that is clean, healthy, well-shaped, and has a straight-trunk near the bottom. It should have a strong fragrance, pliable needles, and good color. Be sure to shake the tree; avoid trees that drop a large number of needles when shaken.