So what does /x/ does while high, I mean what interesting things I can practice?
Drugs at most peel layers of the mechanism trough which consciousness works.
Everything you experience on drugs have to do with the mechanic of brain - it's biochemistry and you know that.
Most cases you get deluded from the experience.. but sometimes they might lead to a progressive series of introspections trough which you get more aware.. or you let go of social conditioning.
Both happened to be I got locked in mental delusions but also broke other mental delusions.
It all has to do with your mental state before you take the drugs.
Focus on the state of experience, don't try to conceptualize very much of what you experience.
>and how can I go deeper in these ''layers of consciousness''
Trough use of drugs or induce yourself depersonalization trough series of techniques that are also used by monks in Hinduism.
It's nothing transcendental it's just consciousness on a different flavor.