Learn how to use Shutter Priority mode on the Nikon D3200 and adjust the Shutter Speed to whatever you'd like.
Shutter Priority Overview:
In Shutter Priority Mode, you select the shutter speed while the camera automatically selects the best aperture for a balanced exposure. Use fast shutter speeds (like 1/500 or 1/1000) to freeze fast moving subjects (sports) and slower shutter speeds (like 3 to 5 seconds) to capture movement (flowing water).
To enable, just rotate the mode dial to the letter 'S' and then rotate the smaller command dial (near the thumb rest) to adjust the shutter speed.
Fastest and Slowest Shutter Speeds on the Nikon D3200:
The fastest shutter speed you can use in Shutter Priority mode is 1/4000, while the slowest shutter speed you can use is 30" seconds.