First, I should say that if your class requires you to buy Frank's 8th edition of Microeconomics and Behavior, BUY THIS BOOK -- and by that I mean this international edition. It is page-by-page the same, and if you don't mind a glossy cardstock cover in lieu of a sturdy cardboard one, it'll save you a ton of money.
Now, onto the book itself. Some reviewers have commented on how there is a lack of mathematical material in this book. That's true, but it goes without saying that this book is titled Microeconomics and BEHAVIOR. The intention of this book isn't to delve deep into mathematical economic theory, but rather to help you think like an economist, aiding your understanding of the behaviors of consumers and suppliers that drive economic models. And given that focus of the book, it succeeds by presenting information clearly, understandably, and in an interesting manner. The chapters themselves only require an understanding of algebra, but there are also chapter appendices that offer calculus-based analyses on each of the chapter's main concepts as well.
My intermediate microeconomics professor was Dr. James Halteman, the one who wrote the study guide for this textbook. He told our class a story of a former student of his who went on to law school and regretted not taking this book with him. I would affirm that this book is definitely a keeper.
Lastly, the reviewer firstname.lastname@example.org commented on how the study guide was a waste of money. I would agree to the extent that while the chapter summaries are a good way to cram for tests if you don't have time to read the whole chapter, the review questions are oftentimes confusing and/or poorly worded. But the good news is that you can access the entire study guide online (and legally) for free at [SEE COMMENT BELOW] The online resources even offer a bonus chapter and additional multiple choice questions that you can take for practice. I hope this helps!