How do I perform it? Just like the LBRP? I looking for someone explain it to me so i can understand it better
72 Angels of Magick is a good grimoire for this. Failing that, you only need the names and seals of whomever you wish to contact.
In Damien Echol’s book “Angels and Archangels” he gives a beginner version (iirc) how to do the full Shem operation - gives preliminary rituals and the full list of angels and a visual graph, where you have to visualize each angel. The method is similar how you call on the 4 archangels in LRP rites. You will be calling on the 72 angels of Shem - one of each zodiac sign and each decan of zodiac.
He also gives you progression rites - just calling on the 12 angels of the zodiac, without the decans and so on.
I use an invoking pentagram for all spirits, sometimes I just call out to them in the astral plane… it’s not hard contacting spirits