This is not the main book and in no way intends to replace it. It is however a SUMMARY which was calmly and concisely written by Paul J. Rusk which:
Relays the author's message in a simplified manner
Written in simple English Language that can be grasped by people of all levels
Sufficiently summarizes some salient points that you were likely to miss out on
It is pocket friendly and equally time friendly yet priceless