At that time in the video there is this little gui which you can drag around and stuff to affect the body how do you do that in blender?
I would start with videos that teach you rigging. The GUI he made can probably be done if you feel like going though the hassle to make all the switches and such. An official training video called “Humane rigging by Nathan Vegdahl” is a good place to start.
This should teach you some basic fundamentals and how to make control bones with special shapes and how to rig them. The rest is just modeling a “control panel”.
Humane rigging is sold at the blender store or you can find a copy on youtube since its a CC release.
Also if you want to rig a humanoid character fairly quickly then look up videos on how to rig with rigify (Blender’s pre built rig). This won’t really teach you how to rig though.
here’s a good tutorial on getting started on some of this kind of thing…
Plus I second the comment above arout Nathan Vegdahl’s Humane Rigging Tutorials are excellent for Learning the Blender Rigging system…
the Rigging System in Blender is one it’s strong points … especially when it comes to character Animation…