for Texture Maker:
tutorial presumes you are already familiar with the interface.
2.5 to 2.7
of Texture Maker required.
is a Texture creation tool by Tobias Reichert.
can follow this tutorial with versions before 2.5
aware that some functions have altered in the later versions
simply didnot exist in earlier versions.
for further details.
tutorial details how to create a basic metal texture
in both a clean and a rusty state.