Nikon D5300 - Manual (Page 33)

13 Introduction
4
Attach a lens.
Be careful to prevent dust from entering the camera when the lens or body cap
is removed.
Be sure to remove the lens cap before taking pictures.
Remove the camera
body cap
Remove the rear
lens cap
Mounting mark (lens)
Mounting mark (camera)
Align the mounting marks
Rotate the lens as shown until it clicks into place.