Requirements for Evoking Eternity

Geeetings. I would like to know, are there any requierements PRIOR to work with Evoking Eternity?
I was told one HAS TO have a foundation before using it.
Is this true?
Because I have no such thing as my astral senses opened.
How am I supposed to see and hear the spirits if I use the booK?

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No previous experience required (: