At the end of my reading I understood the general operation of the Arduinon I had installed its development IDE (interface) and I tested a few simple programs.
In short I mastered the "basics of programming" on this machine ... which is the title.
Initiation to Language C for a total beginner in my opinion very well done if we know the principles which should be borne in so few pages ... hat.
Besides, I added that the book reads very quickly, not by lack of content but because his playing is fluid and enjoyable. There are of course chapters that require more concentration than others and sometimes one or more proofreading, but overall it quickly acquires the knowledge outlined in this book.
So yes, it is obvious that a book on the Arduino written by a French might be better but I must admit that these works are not legions at the moment and in addition this book is very affordable in tariff terms.
In short, for one I recommend. I will take away a star for a few small details to be corrected in any subsequent edition.