Positive assessments me seemed more numerous than negative, and I let myself try saying that at worst I would have lost 1.90 euros: that is, not much.
But we must admit that for that price, I was not expecting much either. The comments were particularly piqued my curiosity.
Finally, it was a very nice surprise for a small short and unpretentious book, that's why I give it 4 out of 5 stars good.
It is fun to read and it has the merit to recall some fundamentals.
I even removed 4 or 5 interesting practical exercises, which is not so bad: I do not say the same of other more serious books, more technical and more expensive ... for which I also and unfortunately left a try!
