This was an interesting project. I have made one of these before but didn't have a clue how to work it.
One of my facebook friends, Judy Kingery In Abilene Texas makes these regularly and she had a picture of some instructions with one of her tops uploaded to facebook. I asked Judy to mail me a copy and she kindly posted me instructions on how to turn a top and how to throw it. You have to wind string round the top in a certain way then throw it upside down across your body and it rights itself and spins.
I was able to do this first time. It is wonderful what a little know how can do.
Many thanks to Judy.
Judy makes some lovely items so check her out on facebook. https://www.facebook.com/judy.kingery?fref=ts