The only problem is that I have the impression that it was designed as a pocket book. It is therefore small and large, when he could have had a bigger format and be thinner. 2 or 3 pictures would have been welcome too ... knowing that the test on file CAPES there will iconographic doc.
If the authors of this book read this comment, congratulations! The only thing That I can say Is That practice makes perfect ... We will see the second edition ;-)