I found Mulhall's work to be a helpful illustration of the main efforts of Heidegger's "Being and Time". I wouldn't, however, suggest this work to someone who is completely unfamiliar with Heidegger. Although I believe Mulhall has done a fine job of slowly articulating the path of Heidegger's great book, it is not an easy read. If you are looking for cliffnotes....look elsewhere. This book is for those looking to better understand Heidegger's thought; it is not for those looking to write a quick paper. If you are genuinely interested in getting a firm handle on the main points of Being and Time, I would suggest this book. Routledge has produced some great guidebooks...and this is one of them.
I bought the book in order to make sense of Heidegger's excrutiatingly difficult, BEING AND TIME. After having read the first 40 pages twice, the book wasn't making matters any clearer. I don't know why UCLA's Simon Evnine said "It will prove most helpful to students struggling to understand Heidegger's difficult work". The problem I think is that he using H's terms without comprehensively defining H's unique vocabulary (in a way that those who aren't professional philosophers can understand). And furthermore, he doesn't inform the student of the relevent background philosophical ideas that, I think, are necessary to understand H's text. I checked out Gelvan's A COMMENTARY ON H'S BEING AND TIME (quite coincidentally, without having read the previous review!), and found it much, much more illuminating. I have a paper due in a week on H's B & T, and I'm sticking with Gelvan!