Is there a resource here or planned for learning the eight fundamental Matrikas? Their associated rashmis are of particular interest! OM

For me maybe this should be my focus as it appears to be Absolutely foundational to this Supremely complex universe.

I am ordering this: The Devi Gita: The Song of the Goddess : A Translation, Annotation, and Commentary https://www.thriftbooks.com/w/the-devi-gita-the-song-of-the-goddess--a-translation-annotation-and-commentary_c-mackenzie-brown/1686451/all-editions/?resultid=b7519ce4-cbfb-4f0f-a139-3dd3ce2a33fe

Wikipedia: Tantric works like Tantrarāja-Tantra (unknown date, author) and Kulacūḍāmaṇi discuss the worship of Matrikas as Shaktis or letters of the alphabet.[97] A process of this worship, Matrika-nyasa (lit. "installation of the Mothers"), is described in Devi Gita, part of Devi Bhagavata Purana.[98] It involves installation of powers of Matrikas – as letters of the alphabet – in one's body, by "feeling the deity worshipped in different parts of the body" like head, face, anus and legs and reciting mantras.[99] The Hrillekha-matrika-nyasa, a more specialized form of Matrika-nyasa, combines the installation of "most powerful set of all letters (Matrikas)" with the seed syllable Hrīṃ of Goddess Bhuvaneshvari.[