there is a multitude of information online. even so much as googling psychokinisis training will allow you to find actual facts placed online by psions.
psi wheels seem the most common starting point.
practice, even for a few months to a year ongoing yeilds results at different paces.
you might find Pk isnt your thing, and stumble onto another talent along the road, or you might excell at it.
and of course, meditation before and after helps.
as a caution: dont push or force it. feel hungry? eat. head starts to pound and ache? STOP. feel really tired all of a sudden? Take a break.
This is Draining, and you must obey your body.
as you train the muscles, so you train the mind afterall.