I frequent an Astral Projection forum called The Astral Pulse. Back, long before I was there, we had a member by the name of Frank Kepple. He had been projecting for a good 20+ years and came to share his knowledge with the other members there. Anyways, he made over 3000 very informative and very interesting posts over the 3+ years that he was there.
I took some time to compile a PDF version of all of his astral projection-related posts. I’ve read them all and found them very enlightening.
Anyways, I hope you enjoy reading them as much as I did.