Chess is a very complex game which can completely consume you, if you decide that is what you want. This book does a very nice job of reviewing several openings and the groupings that each resides. There are a few board diagrams that are incorrect or at least confusing in presentation (pieces don't always align with the description). The author discusses alternatives which could be what confuses the board diagram presentation.
Within the chapters on openings (approximately 50% of the book) the author has presented a succinct overview of popular openings, often using games contested between grand masters which is quite helpful. The additional game play information presented in the book (strategies, tactics, end-games and strategies) are too brief and should of been more expansive.
Overall the book does a very good job of presenting openings. As a chess player who isn't interested in allowing the game to consume my life the book is a very good instructional aide for strengthening my opening game play. I will reread the book to understand further the principles presented such as pins, forks, pawn chains and the strength of controlling lines.