Organized in chapters based on the various roles Dance plays in human life (social entree, politics, rebellion, emotion & release, pure physicality, religion & spirituality, nostalgia, intimacy & socializing, and healing).
Best if you have some idea of dance history from the past 100 years so that you recognize the name dropping and have some idea of the movements he's describing. Having watched a bunch of musicals helps, too.
Most things are filtered through the author watching performances and taking classes in several different disciplines (including some that aren't really performance based).
Note that he's a 40-something and then 50-something year old man taking dance class in NYC.