What is a correct sequence of notes in Chopin prelude #8 when playing slowly? How 32-s should be played against a triole of 16-s with a 8th added in a bundle? It seems that there are no together played notes in both hands like some tutorials advise (except the first). Should it be played like togther-right hand-left-right-right-left-right-right-left-right-right or how?
There are, but that's not the point of this piece.
As long as you play this prelude slowly enough that you can distinguish these cases, it's way too slow for the intended effect. Once you've managed to reach the proper agitato speed, all that matters is that the first note of each beat should be simultaneous for both hands, and the second large note of the right should come after the lowest bass note. The small notes have to be as fast as possible in order to fit between those notes at all. Neither the player nor the listener will be able to perceive the exact timing between those notes anyway; the effect to achieve is that of a haze of chord notes.
(If you examine the score mathematically, you'll see that there are two more simultaneous notes in each beat: the lower bass note and the 5th demisemiquaver. But as noted, the point is not to hear this; if you can, it's not agitato!)