Can anyone PLEASE tell me how to edit a picture in photoshop like this?

Looks like nothing was done, just use a good camera like the Nikon from the pic.

If anything was used, maybe it was some color correction (vibrance or saturation) or a vignetting effect (Filter/Lens Correction/Custom/Vignette).

To be honest, the photos look pretty natural. What about the editing do you want to duplicate? (i.e. the lighting, the color tones, etc)

Might have boosted contrast or changed curves but it generally looks unmanipulated