I loved this review from Fox at Geek Scholars
Joss Whedon: The Biography is an insightful, entertaining, engaging, and intimate account of the life and work of one the most talented and successful artists of our time. Writer Amy Pascale paints her portrait of Whedon adeptly, often serving not as an author, but rather a facilitator, compiling insights from a variety of sources to construct a compelling narrative spanning from Whedon’s grandparents through the modern era to his successes within the Marvel Cinematic Universe. Pascale draws upon many individuals, including Whedon himself, to give the readers a true understanding of writer and director’s motivations, creative process, struggles, humor, and personal convictions, which evolve and mature over the course of many decades and experiences.
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