This article is a composition of the material I have regarding this grimoire, also known as the true grimoire. It focuses on working with infernal spirits, so fallen angels (at the top) & demons etc.

Wiki:

https://en.wikipedia.org/wiki/Grimorium_Verum#:~:text=The%20Grimorium%20Verum%20(Latin%20for,two%20books%20and%20no%20more.

My review:

Playlist: