Ebook: Evolutionary Psychology: A Beginner's Guide (Beginner's Guides)

A good overview of the incipient field of evolutionary psychology (inchoate in the 70s, emerging in the 80s, newly born in the 90s, and now in its formative years). For a more indepth anthology of primary sources (peer-reviewed articles and a few introductory passages), I recommend the following.

The Adapted Mind: Evolutionary Psychology and the Generation of Culture