Here is a list of essential books to read on your third eye journey.
Jonathan Black: The Secret History of the World & The Sacred History- How Angels, Mystics and Higher Intelligence Made our World. & also The Heretics Handbook
Jo Durden Smith: Nostradamus and Other Prophets and Seers
Philip Gardiner & Gary Osborn: The Shining Ones
Anthony Peake: Daemon
Gary Wayne: The Genesis 6 Conspiracy
Neil Sanders: Your Thoughts are Not Your Own
J.S.Gordon: The Path of Initiation
Eliphas Levi: The Mysteries of Magic
Truth Seekah: Spirit Realm: Angels, Demons, Spirits and the Sovereignty of God
Tricia McCannon: Angelic Origins of the Soul: Discovering your Divine Purpose
Albert Pike: Morals and Dogma of the Ancient and Accepted Rite of Freemasonry
William Walker Atkinson: The Secret Doctrines of the Rosicrucians (Ancient Mysteries Series)
Nathaniel: The Art of Seeing: Your Psychic Intuition, Third Eye and Clairvoyance
Professor Griff: The Psychological Covert War on Hip Hop & Symbology: The Psychological Covert War on Hip Hop Book 2