The monks in the Tibetan Buddihst temple that I volunteered in told me that every “enlightened” person goes through the same “meditation” process np matter wher they are from. First its is single point concentration, than Vipassan meditation, than you just stop because your mind is already “enlightened” enough so you don’t need to meditate.
First you need to start at single point concentration meditations. Techniques such as Zen or Shamata.
What to do after that, I cannot tell you. All I know is that you have to be able to sit in Shamata properly for an hour or more. And that is somethig that I haven’t achived yet. The max I sat at was 40 mins, while most days 30 to 20 mins.
Also, there is Tibetan dream Yoga. I know that it involves using imagination. I need to try the technicalities of it.