Mode M (Manual) - Nikon D3300 Reference Manual

Mode M (Manual)

In manual mode, you control both shutter speed and aperture.
Shutter speeds of "Bulb" and "Time" are available for long time-
exposures of moving lights, the stars, night scenery, or fireworks
(0 110).
1
Rotate the mode dial to M.
Mode dial
108 P, S, A, and M Modes