It depends on a lot of variables. One big one I noticed is diet- Most of what we consume has a psychotropic effect on us, we are really inundated with sugars(artificial too), preservatives, chemicals, colors, etc. On top of that our modern society has our minds constantly racing and going in all sorts of directions.
The big thing to learn how to do is be able to calm the mind. I started(and still do this) I come up with some sort of nonsensical ringing phrase, like a mantra, and repeat it while in a calm setting- sitting up, or laying down. anything ringing like ahhhhhh raaaaaammmmm, which serves as a focal point for your awareness. You will notice your mind wandering and you just bring it back to the focal point. You begin to be able to shut off auxiliary thoughts.
Do this at least twice daily, for about 20-30 minutes. You then practice it standing up, sitting with eyes open, then while walking down the street. Just like working out a muscle you strengthen your focus by adding more weight. Eventually you do it while driving, while talking to people, etc.
Once your you instantly clear your mind, and hit "point consciousness" you essentially query a database, but the results you get back arent webpages, its full blown experience, sound, color, emotion, pain, everything. it is a very dynamic and precise system, so a clear focus is essentially. If your awareness is fragmented, you get fragmented results, hence why most peoples dreams are strange and fragmented, often frightening experiences.
Heading out for a bit, will respond later tonight.