How do I use the bulb mode on a Nikon D3300 to capture long exposure shots?

To use the bulb mode on a Nikon D3300 for long exposure shots, set your camera to manual mode, adjust your settings for aperture and ISO, then turn the mode dial to "B" for bulb mode. Press and hold the shutter button to start the exposure, and release it when you want to end the shot. Use a remote shutter release or timer to prevent camera shake.