How to bind a model to an armature? My pose mode simply does not move the body, I tried weight painting and everything but it just  does not move. It's a simple creation, just a body made simple...

I looked at some other people is works and all, all it seems to do is press CtrlP > Automatic Weights but it does not move the body still.  

Something I noticed is when I use Automatic Weights it creates many Vertex Groups called Bone.XXX, but those groups are not assigned to anything. Should I find a way to assign them?
Should I find a way to assign them?


Yes. If the vertex group option is checked:



You can use the weight paint mode to change the weights of the active vertex group (current selection in the properties panel):


Assign/Remove the selected vertices to/from the active vertex group in the properties panel:


and change their weights in the viewport: