These recommended books were all published by Oxford University
Press and all done by W. Y. Evans-Wentz. This man actually sent time
in Tibet, during a period before it was trashed by China, and became the
student of a legitimate Guru who instructed him in the secrets of Tibetan
yoga and encouraged him to return to the west and make these materials
known. All of these books are technical and are far beyond the most
technical RS Beas books which were written by L.R. Puri. Some of
them may be out of print by Oxford University Press. However, all
of them can be found used on sources such as amazon.com. Also, where
new stock is still being sold by Oxford, the books are considerably "pricey"
as compared to perfectly good used versions which are generally less than
$5 each.
We recommend these books because they are real. They are not silly propaganda as distributed by the cults. For example, Milarepa's student, Gampopa, works as a high official today on the Astral plane and can be recognized by his picture in the books for those of you who can go there. Milarepa, Gampopa's Master, has presumably left the created worlds.
THE RECOMMENDED BOOK LIST IS:
MAIN RECOMMENDATION
"TIBETAN YOGA AND SECRET DOCTRINES"
ADDITIONAL RECOMMENDATIONS
1. THE TIBETAN BOOK OF THE DEAD
2. TIBET'S GREAT YOGI MILAREPA
3. THE TIBETAN BOOK OF THE GREAT LIBERATION
ADDITIONALLY, Evans-Wentz wrote other books. So, if you like his
style, just do a search for "Evans-Wentz" or "W. Y. Evan-Wentz" to get
a complete list of his works.