Spinning Cotton On A Supported Spindle
Sitting on the ground or in a comfortable position with the spindle resting on a smooth surface, support it at a 45-degree angle in the space created by your thumb and index finger.
Bring the shaft of your spindle forward to the tip of your finger and give it a good hard twist, much like you would a toy top. (Always twirl in the same direction.)
The more momentum you give you spindle, the faster and easier it will be to spin a yarn.
As the spindle twirls, let it fall back into the space created by the thumb and index finger where it will maintain a steady spin.