>>40845582
Good Books?
https://archive.org/details/liber-falxifer-iii-the-book-of-the-52-stations-of-the-crosses-of-nod/page/202/mode/2up

Current 218/182 stuff is for Dragons + Templar.
This sort of stuff;
https://wh40k.lexicanum.com/wiki/Daemon_Prince
Is related to "the great promises of tha path". "Daemon-princehood in 40k" is achievable power-level wise in the real world. Since the thread is 40k based; study Chaos Space Marine stuff as a real potential lifestyle; Living in "the Warp"; in Sitra Achra; is the end goal of the books; "Back to Ain";
https://www.youtube.com/watch?v=OBdg_h92JM4&ab_channel=SeasonofMist

"Book of Sitra Achra: A Grimoire of the Dragons of the Other Side" you want to study;
https://archive.org/details/TheBookOfSitraAchra/page/n41/mode/2up

Emissary chapter has loads of stuff to work with; calibrate both machine spirit and physical personell with it. Look for Second Edition on pdf; can't find it through google; might be available on torrent sites? If you find one feel free to reupload to some website where it can be easily accessed through google searches.
Second edition has the additional "invasory rays of the black light chapter" which is fun to work with.