You actually got a very good and a great point here. Not everything in the public occult world has been seen nor exactly heard of, because public occult world is an oxymoron.
You know, if I was born fifty years ago, in that time, in America, witchcraft was but a whisper. What was considered science fiction when Tesla was around, is now actually considered actuality now, in the science community today.
Listen to, Pursuit of Happiness, by Kid Cudi. Tell me what you know about dreams?
Tesla was considered a quack, in the science community. Now he is reverend as a man ahead of his time.
You see, the things in the occult world are going to be hard to find. Then you are going to have those old school 'teachers' who will drag you down, if they don't have the tolerance. Knowledge is cumulative, because the more you know that you know, you start to realize that there is more and more that you know that you don't know, then you will realize that there is exponentially more that you don't know that you don't know. What we know are but specs of dust in the world of occult knowledge.
You listen to the music that you like today, generally your parents won't like it. You wait long enough and then it is too late, because your kids are listening to music that you just might not like.
If you want to understand the occult world, you got to study the general populous of the occult world. You got to ask yourself questions about how and why others may be saying this and that, and why might it that these characteristics are showing up as patterns?
You see what I did? I came to you. I saw something and understood it. It is because people say things without saying things, when they don't mean to say things that gives themselves away.
Understand categorizations of witches and peoples' agenda, without asking explicitly, you then can navigate yourself for those very things that you look for. One small step into the unseen and one giant leap for everything unseen, to be seen.