No Place to Hide
by Glenn Greenwald
If you have read Edward Snowden's work, then this is a good to read addition to know the same story from a different person's perspective. Since Glenn is entirely a non-tech person, it is good to hear from him as well.
Gelenn is the journalist who traveled, along with Laura Poitras, to Hong Kong and met Edward Snowden which lead the the ground breaking revelations.
Even if you haven't read Snowden's book, this is a good independent read. Highly recommended.