I have a pretty negative impression of this book. I haven't read the whole thing but I have studied one section in depth, one-on-one with a professor. I have also read secondary sources on it. This was so I could write a thesis on another philosopher to whom Heidegger was an important influence (Levinas). So I was required to have some overall understanding of the work as well. Despite all this, and despite thinking that there are some interesting questions raised, the style of the writing seems incomprehensible and I can't claim to have gained much from my effort. I would much rather read Hegel!