How to shoot levitating subject in DSLR camera?

I have Nikon D5100 i'm still learning some stuff like Levitation shoot but i don't know what to do? So anyone can tell me the setting for clear shoot with blur while jumping or moving that i should use like what Mode or Shutter Speed?

I saw a tutorial on this the other day…
Here it is: http://www.practicalphotoshopmag.com/2012/03/09/miss-aniela-how-i-make-my-levitation-photos/

I googled her name and got a video too: http://vimeo.com/...m/16105937

Levitation pictures

Here are the Photoshop steps - if you have a different program, the same principles still apply. If you're only using a website, it may not work - most websites are much more limited. If you want/need something better but can't afford Photoshop, just download Gimp - it is free and legal.

1) Put the camera on a tripod and do NOT let it move even a tiny bit
2) Take a photo of the room/area without any people or furniture in the way
3) Take a photo with your subject on a stool/ladder/box/whatever. Drape the clothes to hide any straight lines that will be obvious later on.
4) Open both photos in their own layer, the empty room/area as the bottom layer
5) Apply a layer mask to the top layer, and use a black pen/brush to hide the stool/ladder. Now the "clean" layer will show through.
6) Flatten the layers.
7) Use the burn tool with a very soft brush to create a shadow under your floating subject to make it all look more realistic.