The following pdf files contain the documents mentioned in the book (plus a little more):
“Mastering the Nikon D750”
Chapter 1: Initial Hardware Considerations
Chapter 1: Camera Control Reference
Chapter 5: Speedlight Flash
Chapter 9: SCENE and EFFECTS Modes
Chapter 9: Understanding the Histogram
EXTRA – Selecting a Nikon Speedlight Flash Unit
EXTRA – Shutter Speed and Aperture Chart
Coming Soon