Are you talking about "The Demon Haunted World" by Carl Sagan ?
I heard about Carl Sagan and even saw his books but never read him.
Yes, The Demon Haunted World by Carl Sagan would be a good book to start with and I also recommend the other books I listed:
Flim-Flam! Psychics, ESP, Unicorns, and Other Delusions by James Randi
Top Secret: The Truth Behind Today's Pop Mysticisms by Robert M. Price
The Reason Driven Life by Robert Price
Why People Believe Weird Things: Pseudoscience, Superstition, and Other Confusions of Our Time by Michael Shermer
VestnikRA, I have friends and family that I love who are deeply into the New Age movement and that is fine with me as long as they are happy with their philosophy and don't try to force their ideas on me. However, I have concern for people who are victims of a New Age cult and I encourage all who are into the occult to educate themselves about scientific facts as opposed to pseudoscience. I am a strong proponent of intellectual emancipation. I wish you well on your journey for truth.