Lynn:
Just to add, when you decide to add a lens or 2 to your kit..... do your research. Nikon lenses are great, but come in different levels of quality & prices. 3rd party lenses are the same. Some people love 3rd party lenses, some don't. A Sigma (or other 3rd party maker) lens will almost always be cheaper than a Nikon lens. It is a personal decision as to whether the price diff is worth it.
Doug