If you are an investor, rather than speculator, you will find essential information formulated clearly. This book requires knowing the minimum of knowledge bases, but lets go both further and further. Closer because he approaches things with a very earthy feel good, evacuating ideas frankly and directly, with sliced and unambiguous notice. Some may find this style devoid of diplomacy, but it is not in the jargon: it attempts to demystify all the clichés and misconceptions conveyed in this financial culture where ideas sometimes make a lot of noise for some density their contents. And to enlighten the reader and give it autonomy in its choices. The description of psychological biases, put in connection with the practical and technical elements to relativize, set out with pedagogy and many examples from the experience. It is there that goes further. If there is the theory, it is drawn from experience. The style is easy to read. As others have already expressed some passages are very technical, non-mathematicians will be a little put off. That's the only downside I will. But it would be more on form than substance: we see where we have to provide some accounting work to get his own idea of a corporate recovery and active. However, the summary of the ratios required to make a basic selection is condensed into a page for fans of revenues, and sites like GuruFocus allow to access them, for US values or Zonebourse in Europe. Ultimately, I think this is the kind of book that you can see again regularly to dig notions that could not have integrated. It does not follow fads, but to learn to manage by yourself. And become autonomous, not follower Media prisoner herd and forums where rumors are a lot of unnecessary noise.