For anyone interested in learning about the Tarot of Paul Foster Case and its relationship to the Cube of Space, which features heavily in the book mentioned in the OP, one can turn to the Builders of the Adytum.
https://www.bota.org/
This is the current active lineage of Dr. Case and where supplies, such as the aforementioned text and un-coloured cards, can be obtained for the study of this system of Tarot.
Recommended is to study each card for two weeks, the first in black and white, after which you colour it and study it for the next week in colour.
Along with this you would read the corresponding chapter in 'The Tarot' daily or a few times a week.
It also is beneficial if you can do this practice with others and engage in a weekly discussion on your findings.
As alluded in the OP, the Cube stems from the Sepher Yetzirah, although some suggest older origins as the Sepher Yetzirah was most likely the writing down of an oral tradition.
https://www.bota.org/
This is the current active lineage of Dr. Case and where supplies, such as the aforementioned text and un-coloured cards, can be obtained for the study of this system of Tarot.
Recommended is to study each card for two weeks, the first in black and white, after which you colour it and study it for the next week in colour.
Along with this you would read the corresponding chapter in 'The Tarot' daily or a few times a week.
It also is beneficial if you can do this practice with others and engage in a weekly discussion on your findings.
As alluded in the OP, the Cube stems from the Sepher Yetzirah, although some suggest older origins as the Sepher Yetzirah was most likely the writing down of an oral tradition.
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