There are many different ways to get to a similar position, but the steps described in this instructable are usually considered to be the definitive steps to doing the trick.
I highly suggest learning the steps to this trick with a dead (non-spinning) yo-yo.
The main reason I published this trick was to demonstrate that instructables could be more than just a too to share "what you make". Thanks Shan for help with the photos.
For more yo-yo tricks and videos you can check out my site DoctorPopular.com
Step 1: The first hand position
While the yo-yo is spinning, place your non-yo-yo hand halfway down the string.
Keep your palm facing towards your body with the string between your body and your hand.