My experience is similar to what Jim mentioned about primarily being auditory.
But I really think the key isn't what most people think it is, in fact I think it's fairly simple.
Isolation, from the world. I'm a radiation therapist and I sustained a back injury from a patient
who was not very friendly. They sent me home after my MRI showed my back was shot.
During this time I lived with my gf (She was never home, always at work). I had no friends really,
but I didn't try to make friends either. I did practice magick, and what was so weird is that I was invoking when I thought I
was banishing almost as if I was unconsciously performing acts to conjure up the HGA without knowing it.
Then after around 8 or 10 months of this, I suddenly walked outside
and looked into the sky and started laughing and I had no idea why.
This happened a few times and always at dawn.
Then one day I was laying on my couch and a voice started to speak to me distinctly, I tested it immediately to see
if I was just going nuts or if this was some sort of imaginary being I created. It said "Write everything I say down" and
I replied, "With what?". The voice then said "Look to your left" and low and behold my gf had placed my magickal journal
there for no reason at all that morning along with a pen. I transcribed several pages of this message and still keep it to this
day. The final words were "I will return". I don't consider this to be the K&C, maybe the vision. But after that, my life turned upside down
as far as well... you'd think I'm crazy if I told you what I had seen. All I have to say is, those who speak of the wise men who retire for a few years
and come down with knowledge of the divine to spread among the peoples, there is something to that retirement. It's a knowledge that can only be
attained when the mundane distractions of reality and society are removed and you are only left with yourself.