This list of books on out of body experiences includes both astral projection and near death experiences. They are different from each other, as one is usually intentional and the other is not, but they all fall in the OOBE category.
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Full disclosure, at the time of creating this blog post, I have not read all of these books yet. I have read many and intend to read them all, but I can't currently vouch for the quality or content. Of course, at the end of the day, it's up to each reader to decide the validity of each book anyway!
(Click the title to see more information on each book. These are affiliate links, which I have provided for your convenience, but it does mean that I will receive a small commission if you happen to buy any of them. This comes at no extra cost to you or anything. Some of these books may be available for free at your local library or on Kindle Unlimited or thru Audible.)
Far Journeys (Book 2)
Ultimate Journey (Book 3)
Adventures in Consciousness by Jane Roberts
Seth, Dreams and Projections of Consciousness by Jane Roberts
To Heaven and Back by Mary C. Neal
Proof of Heaven: A Neurosurgeon's Journey into the Afterlife by Eben Alexander, M.D.
I always like to include the Seth books (by Jane Roberts) on these lists, because even though they don't exclusively talk about out of body experiences, they shed a lot of important light on the subject.
See the full list of Seth books by clicking here, but these are some good ones to start with:
The Seth Material by Jane Roberts (and Robert Butts)
Seth Speaks: The Eternal Validity of the Soul by Jane Roberts (and Robert Butts)