A piece of rope fold in half. Both ends hold in one hand, while one of them between thumb and forefinger, and the other between the index and middle. And the second end of the rope goes outside first, as shown in the figure.
Make a rope swing that its middle part is lifted up. And at the same time throw the first end of the rope thumb and forefinger into a loop. The other end between your index and middle fingers, still in his hand. So this node.