The method described is not bad, but it corresponds to what we can already find elsewhere so I find it swelled to call method "Elise Franck" As for the book, there are interesting elements ahead. But literature is deplorable level. Each element is to repeat a thousand times and again in each chapter (and I'm not talking about spelling mistakes). Overall it was 200 pages but to say very little! I advise the reader to read the introduction and conclusion at FNAC and you know 90% of the contents of the book! Last downside: Annex finance and tax (only really interesting part of the book): it says in the footnote% of tax benefits offered by the Scellier declined in 2012 and they must be taken into tus account in the calculations of the following steps !! Would that have been so long to correct the calculations ???? In summary, an unpretentious book (wrongly). I regret having bought.