I loved this book for the testimony he represents and for the very positive and concrete support it brings. the testimony of a true entrepreneur is described here through advice, estimates, points of vigilance that the author himself has experienced. Accompanying the book is done in stages and each stage, there essentially to know and to learn more, links, very easy to understand definitions, .. I read it in one weekend and I still reread places. this book also inspires confidence as the author knows, quotes and advice to sites and other software entrepreneurs referents web.