There are some very useful sections to tis book and it is well written. This is the latest edition and it ha been revised. It does bring some colour to the late Republic but I would recommend reading the introduction before purchasing so you are very clear about what he authors are trying to do.
This book I found very useful for the period concerned. In my second year of Classical studies it provided an accessible introduction to the late republic and a look ahead to the early empire.
It is a short book and the beauty of it is it's concise narrative. It is not a chronological history but a thematic history covering topics such as the Social Order, Religious interests, Political Institutions, and the Working of Politics. It also has a chapter on the provinces.
If you are looking for a comprehensive study of every single thing of the late empire this is not you're book. But as I said it is a light and clear introduction, indicating the fundamental issues and prompting where an enthusiast should search for information with an impressive and extensive Bibliography of both ancient and modern sources.
My wife has this book, as part of a collection of set books, that she requires, for her Open University module A219 Exploring the Classical world. She has found it informative and well written, in language that even a complete novice, like herself, can understand. Unfortunately she has been told, that it only has a small amount of usable information, that is relevant to her module, but nevertheless,she said it's still a good read.