Using the Tarot is a way of communicating with the unconscious. The more one learns about the psyche and unconscious, the better tuned his/her intuition will be, and will have a more complete understanding / interpretation of the Tarot.
The main reason I am reading this book is for the second essay “The Relations Between the Ego and the Unconscious”. This essay is about the danger of what Jung calls ego inflation. This at times is a consequence after someone has a revelatory experience. “Ego inflation” is to erase the relationship / the boundary between the specific consciousness of the ego and the more generalized consciousness as such, which is a dangerous thing to do, something I feel I currently need help with. So this is a document that tells you how to avoid that if one is playing in these realms.