The Tibetan Books.

The Tibetan Book of the Dead is quite an academic book and has quite a depth and wealth of knowledge on insights into the other side. The Tibetan Book of Living and Dying gives an insight into the transition from life in this plane of existence into the stages of becoming and what happens to consciousness after we die. The book goes into quite of detail about the stages our consciousness goes through on the other side of death before the consciousness is attracted and attached to the physical body/world at the moment of conception.