There are some members on this forum who prefer to analyze scientific studies on NDE's, OBE's, ESP, mediumistic channeling etc. and do philosophy, without actually engaging in practices that can initiate this experiences, a fact which I find puzzling, but to each his own. Here is my contribution to this thread:
OBE's: Robert Monroe method(online)
William Buhlman's Target technique(also online, been using it for a week, no progress, will associate it with affirmations)
Robert Bruce inner energy movements and meditation: his methods combine deep meditation before falling asleep and energy work:my personalized program involves meditating in the morning for one hour or so focusing on my breath and abdomen movements(good books on meditation are Mindfulness in Plain English by Gunaratana and especially The Mind Illuminated by Culadasa John Yates) combined with QiGong practice in the afternoon for ideally 20 minutes( I use the postures from Lam Kam Chuen's Way of Energy, currently looking into Embryonic Breathing and Small Circulation meditation to supplement my practice).
Frederick Aardema's vigil method: Involves holding to an anchor in order to not fall asleep, haven't tried it yet.
Thomas Yuschack's book on the pharmacological induction of LD's and OBE's: Basically Galantamine + other chemicals after 4-5 hours of sleep(had the only 2 OBE's of my life using this method).
Will follow up with some other recommendations after I sift through my library more thoroughly.