Finished reading "the spiritual brain", a neuroscientists case for the existence of the soul. he takes on the likes of Richard Dawkins etc.
Really into the radhasoami sant mat kind of books at the moment. Kirpal Singh etc. Decent info here.
Mainly just the usual stuff - Yogananda, Vivekananda, Ennio Nimis.
The Autobiography of Hamid Bey "My experiences preceeding 5,000 burials". Some interesting stuff in there. Mainly that of self-induced catalepsy by pressing on the carotid arteries in the neck and doing kechari mudra after lowering his heart rate. A fast for a whole day beforehand gets rid of toxins in the blood which helps the metabolism slow down. Once in trance the heart rate goes down to 4 bpm and respiration stops. He says it is vital to block air coming in otherwise death can result. In other words, don't try this at home!
Someone that knew Hamid Bey told me he once went for a burial for a whole week in duration. I have a photograph of it.
When Bey is in self-induced samadhi he is unconscious except he sometimes has OBEs and other psychic experiences.