The first 2/3 of this book focused on whether handedness existed at the atomic level or internally in biological structuring, in other animals, and in early humans. It was okay, but went on for a bit too long. Once he got to actually handedness in modern humans, I was much more interested. He also had a very interesting writing style, in which very casual language, even slang sometimes, was randomly inserted into otherwise academic writing. Lastly, I'm sure a lot of the information is outdated as it was originally published in 1980.
Overall, though, it was a worthwhile read to skim through and pick up a few random tidbits.