Nikon D5000 is a single lens reflex digital camera. This is an entry level model for people who want to buy a DSLR for first time.
Nikon D5000 is very easy to use. The menus are nicely organized and can be well understood by the people who aren’t experts and using a DSLR for the first time.
Also the lenses are great. Nikon provides best optics in lenses. The picture quality is very good. Is is the cheapest DSLR available in market with great capabilities.
But there is one flaw in the camera that the internal motor isn’t provided to auto focus. You will have to focus on your own. But due to this the camera becomes smaller and lighter. And the picture quality remains pro.
Overall it is cheapest camera with great capabilities. This camera can be a great start for beginners.