How can I practice and learn psychokinesis?
check out psipog.net Astral Society also has lots on PK.
Some people would say use a psi-wheel. If you do, then cover the wheel with a thick glass and keep your hands away from it. The reason for this is that it has been shown the heat off hands can actually move the wheel. The air, heated by convection becomes slightly turbulent around the wheel causing it to turn - which can seem like it is being moved by the mind (when it is not). It's also possible if hands are close to a glass they could slightly warm it (fractionally above the temperature of the rest of the glass) near the hands and cause the same phenomena. Even a fractional increase in heat should be enough to set up so form of air circulation.