Conversation so far:
was their a biography written about Glenn?
Investigative reporter Alexander Zaitchik released a critical biography of Glenn Beck titled Common Nonsense: Glenn Beck and the Triumph of Ignorance.
when was this biography released?
Common Nonsense: Glenn Beck and the Triumph of Ignorance was released June 2010.
what things did the book Common Nonsense: Glenn Beck and the Triumph of Ignorance  state about Glenn?
In the end, Zaitchik renders Beck as part opportunist, part entertainer.

Question: what was the book about?
Self-contained rewrite: what was the book Common Nonsense: Glenn Beck and the Triumph of Ignorance about?