Designed to bridge the gap between social science studies and field econometrics, Econometric Analysis, 8th Edition presents this ever-growing area to an accessible level. The book first introduces readers to basic techniques, a rich variety of models, and the underlying theory that is easy to put into practice. It then presents readers with sufficient theoretical background to understand advanced techniques and recognize new variants of established models. This focus, along with hundreds of working numerical examples, ensures that readers can apply theory to real-world application and are prepared to be successful economists in the field.
Greene's text is an essential guide to econometrics. There is no other definitive book on the subject with the same level of depth, rigor of proof, etc. Wooldridge is easier to learn and learn, but lacks some of the linear algebra that some classes require. My recommendation for Fin / Econ / etc. A PhD (because these are the experiences I can talk about) is about getting a copy of each of them because they can complement each other in different ways. The book "Mostly Harmless Econometrics" by Angrist and Pischke is also very useful.