If one reads Buss' text in a certain manner, there is a lot to say about it. It's organized by evolutionary challenge (survival, mating, parenting, group living), exploring how adaptations to each of these challenges might explain human behavior. The general approach is a survey of the literature. Thus on survival, the reader is introduced to hypotheses about the adaptive value of our taste for meat, sweetness, bitterness, spice, alcohol, how these tastes change during pregnancy, and how our attempts to gather food (e.g. hunting) shaped our species (e.g. male-female spatio-temporal differences and group dynamics). Common human phobias (e.g. spiders, heights) are explained in terms of adaptive fitness. While much of this may seem obvious, it is difficult to fault a textbook for explaining the basics of its field. Buss then introduces the evolutionary theory of senescence to answer the question 'why do people die?', and then most speculatively introduces hypotheses about the adaptive value of suicide. Again, if read in a certain way, as an overview of the literature, this book has a value. But don't expect much critical thinking from Buss. He seems predisposed to think that all human behavior is adaptive. While one can certainly imagine how suicide may help one's genetic fitness in certain instances, there is a big leap from this observation to suggesting a heritable mechanism upon which one can decide to advantageously end one's life. Given the high rate of physically healthy teen suicide, an adaptive hypothesis to explain this behavior seems farfetched.
On sex and mating, Buss reviews the psychological literature of mate preference, capably arguing that gender differences are due to evolutionary asymmetry, as opposed to competing hypotheses (e.g. structural societal differences drive women's mate preference). The chapters on kinship are dominated by further explorations of sexual asymmetry as well as the influential theories of Hamilton and Trivers. Moving on to social matters, Buss discuses reciprocal altruism, aggression, warfare, sexual aggression, and status. Again, it is a solid overview, but where it loses value is in its lack of critical assessment of the theories proposed. Evolutionary psychology has been wrongly attacked by many as a collection of unscientific, post hoc, rationalizations. It has also been criticized (e.g. by Gould) as attempting to explain too much of human behavior as adaptive. As such, a text on the matter should do more to contest these notions. Instead, Buss feeds right into them, with uncritical examinations of the evidence in favor of his favored hypotheses (contrasting with his criticism of non-evolutionary theories). In general, this book fails to adequately examine non-evolutionary theories, is uncritical of questionable methodologies (e.g. self reports), and is far too ready to accept dubious interpretations of correlations. But again, if you can keep all this in mind, and read with a critical eye, this book is a nice overview of the field.