I do not use blender myself. I use another program.
But here are the tutorials that blender provides.
http://www.blender.org/support/tutorials/
First thing you will need is a human mesh. these can be made from programs like Fuse on steam or another one called Make human.
Once you have that mesh made and textured the way you like, then you will need a skeleton.
3 spines, 1 neck, 1 finger, 2 joints, and a firespot bone.
You normally make the skeleton to match the mesh size.
I believe blender has a humaniod skeleton in the program.
Once the skeleton is sized to the mesh, then you must bind or skin the mesh to the bones, ensuring that no more then 3 bones are pulling on any one vertice.
Some adjustments will be needed to prevent unwanted stretching of the mesh in places.
Patients.
Once you have that done then it is time to animate the skeleton to the desired movements.
An FBX file is provided here.
https://forum.game-guru.com/thread/209329 and there are programs that can convert that to BVH format for blender import. Exact procedures you will have to search thru the tutorials or specific search thru google.
Once you have the animations you desire then you will need to export it out in Direct x format with material, animations and armatures(bones).
Next duplicate one of the FPE file of one of the characters and change the name.
Open it in notepad and change the media files to match yours.
Open GameGuru and set your character and test it for functionality.
Hope that can get you started.
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