It is really quite simple to convert Raw (NEF) files to jpeg or even Tiff files using Nikon View NX2 (free) or Nikon Capture NX2 (free trial) since both automatically read and include all in camera settings in the conversion.
The primary advantages of shooting Raw is Raw files have significantly more information than Jpegs that provides much more latitude for adjustments. Just like a film negative. You can make adjustments to a Raw file without loosing any information. Every time you adjust a Jpeg and resave it information is lost.
Most third party software also have Raw converters though you must adjust many of the in camera settings in the computer since they can not read the in camera settings. Good Luck and Enjoy your Nikons!