The first video is about helmet creating. This is a very useful technique, the final model is very optimized, and very spherical, so this is the perfect way to create a helmet. You can make helmet what you want with it.
This video is about human creating. This is the best tutorial I found. I started to modeling humans this way.
This one about pelt maping in Max
This is the render to texture function. When the materials became beautiful textures. (You need uv textures)
These are the basics of how to make a weapon. Very basic tutorial, if you want to model a real weapon, you need a reference image.
About the animation.