Scope of the book "Physical Properties of Rocks - a Workbook" is a symbiosis of a brief description of physical fundamentals of the rock properties (based on typical experimental results and relevant theories and models) with a guide for practical use of different theoretical concepts. For this purpose a selection of model based equations is prepared as excel worksheert for practical application and training by the user to work with his own data (or to 'play' in order to demonstrate the effects of various input information and enjoy 'play' in order to demonstrate the effects of various input information and enjoy petrophysical work. Thus the book also contains a CD. In two special chapters the problem of relationships between petrophysical parameters based on various model concepts is presented as a fundament for combined interpretation. This part also contains the author's 'structured model'. The workbook is a result of the more than 40 years experience of the author in teaching at universities and industrial courses. This title presents all practical relevant properties of rock in one volume. It includes experimental and theoretical fundamentals in a systematic framework. It has a special focus on relationships between properties.