In this small book of 150 pages, and the reading is very easy, the author revisits the military and political history from antiquity to derive principles for establishing schemes.
So be "cleared" 30 lessons to gain power. For example, among the most "normal": Corrupting, bluff, betray, anticipate, manipulate, persuade, divide, condition, impress, diversion, etc.
Other slightly more surprising: instrumentalize athletics and theater, choosing his enemies, surpassing its allies spare his enemies, etc.
I find this book full of common sense. What is especially, I think, extremely rich, are all historical anecdotes he cites as an example and which he left to meet certain principles. He often reflected by induction.
There, in the edition Arabian Nights, a few footnotes pages that situate the protagonists of the stories recounted. This is very useful and allows more curious for further research.
This book reads easily and is very beneficial. For the "twisted", it could allow them to achieve their ends. For "less distorted" it will provide them with more discernment and read some deeper lived relationships (eg at work, in politics, etc.).
In short, at this price, it is necessary!
I hope these few lines will be useful.