Volume 1 — Understand and Learn. 420 typeset pages, 128,220 words. Three opening texts, then chapters 1 to 43: the machine, files, the network and the Web, data and algorithms, the mechanisms of artificial intelligence up to multimodal models and what it cannot do; nineteen professional fields examined one by one; and finally what to learn, in what order, where and at what cost.
What this book is
A complete school in book form. An ordered path in two volumes and seventy-eight chapters, from the foundations of computing to the practice of a profession: understand, learn, practise, build.
How every chapter is built
The same order, from the first to the last: where you stand, the objective, what you will learn, the lesson, the exercises, their answers, what to remember, common mistakes, a verifiable exit criterion, and what comes next. So you always know whether you are ready for the next chapter.
What sets this book apart
- Every statement carries a label. VERIFIED FACT means a dated primary source was opened and cited; OFFICIAL STATISTIC, ESTIMATE, PROJECTION, TEACHING EXAMPLE and HYPOTHESIS say exactly what the rest is worth.
- What could not be verified is written as such: the book contains twenty-eight explicit refusals to give a figure, each with its reason, rather than invented orders of magnitude.
- Sources are dated and gathered in an appendix of fifteen sections, chapter by chapter, with the date they were consulted.
- The book says when it will age: a whole chapter lists the pages you should re-check yourself.
- No income, no salary and no service price is promised.
Formats delivered
Volume 1 is delivered in the following formats, all included in the price and downloadable immediately after payment:
- Final PDF — cover included, 421 pages, with the pagination and table of contents of the print edition. This is the file to print.
- EPUB — the text adapts to the screen and to the font size you choose (Books app on iPhone, iPad and Mac; Google Play Books, ReadEra or Lithium on Android; Thorium Reader or Calibre on a computer). No paid software needed.
- Image edition for iPhone and iPad — an EPUB that shows every page of the book as an image, with cover and table of contents.
- The complete folder (ZIP) — PDF and EPUB, plus a START_HERE.pdf that explains on one page how to open each format, and a HELP folder.
Your files remain available from your account, with no limit on number or duration, and updates to the book are added there at no extra cost.
The second volume
Practice and Build contains chapters 44 to 78 and the eight appendices. Chapter numbering runs through both volumes: a reference to “chapter 19” means the same chapter in either volume.
English edition of the original French version. The page-turning mode, the learning mode and the video lessons of the French edition are not available in English and are not part of this purchase.



















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