The book is the best entry-level work in the world of economics for me. In short articles are important concepts in a nutshell. This is not to standard business administration knowledge, but also the psychology of the workers and purchase ends. And about how systems work. Certainly many of the concepts are only in focus, but who wants to, can always further research. It serves me repeatedly as a sort of look-up work, for example if I brain storme about business ideas or meditate on the effects of specific marketing ideas.
The concepts are very clearly explained and well stocked.
Who reads it and applies it to his own work, which will certainly be able to take new perspectives and develop more balanced decision-making as a result.