Looking at my previous post it was a bit unhelpful let me rephrase.
I use Qliphothic Meditations book by Asenath Mason when approaching the spheres. It’s simple to follow and use and it very solid instructions and explainations in there, I love it and I would highly recommend it to anyone.
What @Voidgazer recommended works well too, I have that book myself, and it was explained really well by them.
As for the denizens of Gamaliel & Lillith other than Naamah and Lillith I saw: owls with black eyes, demons with huge ittypcal dongs, succubuses and inccubuses, hooded people who did sacrifices that either used me or other people/things.
The environment is mostly a forest with different atmospheres by a lake or a glade, or a mountaintops with stonefotmations (this is rare). As for what I did it depends on what you mean, do you mesn during the meditation or when I came out of it?
Here are a few selected journaled experiences off mine, if you want to read some: