If you care about privacy, or want to understand what the NSA and CIA really do to monitor Americans, this book is an important read. It explains from beginning to end how Snowden became the privacy hero he is today, why he decided to leak the information, and how he did it. It's an interesting and important read, but also probably 100 pages too long.
His continuously-updated books page, where every book he reads gets a 1-10 rating and a "Why Read it" note; the book links carry his Amazon affiliate tag. The page carries no publication date for individual entries — its own metadata gives article:published_time 2012-12-16 and article:modified_time 2020-10-28, and books were added across that whole span. (undated page)
2020-10-28·jasonevanish.com ↗