This new edition is a very simple but attractive book which presents the basics of geology. Without developing on theoretical approaches, it gives essential information on the constitution of the Earth, the different types of rocks, the stratigraphical units and their deformations observed in sedimentary basins and mountain ranges. The text is short, the selected figures are clear and illustrate the major geological concepts. It will indeed serve readers as an abridged view on geocsciences and as an introduction to petroleum geology. A must for both the apprentice and the layman.