See also 2017 Eclipse

General Overview:
See links below for specifics.

Warning: Permanent eye damage can result from looking at the disk of the Sun directly, or through a camera viewfinder, or with binoculars or a telescope even when only a thin crescent of the Sun or Baily's Beads remain.
See links below for

You will need
At totality it will be like night photography with slow shutter speed so you should have:
  1. A Tripod
  2. Remote shutter release
Solar Filters:

Links:
How to Photograph a Solar Eclipse from Nikon
How to Photograph a Solar Eclipse | B&H Explora Return to Hobbies