Foucault at the Stanford Encyclopedia of Philosophy
https://plato.stanford.edu/entries/foucault/
Comprehensive overview of Foucault's life and works.
Sexuality as Social Construct
An accessible summary of Foucault's contributions to thinking about "social construction."
Review of History of Madness
https://www.lrb.co.uk/v29/n05/peter-barham/rubbing-shoulders-with-unreason
A summary of the new, unabridged translation of History of Madness, from which Madness and Civilization was taken.