Need tutorial suggestion for using .tga files on my model.

I received a model from a friend and also received colored/textured armor to go with it in a “.tga” file. There’s actually a diffuse, spec, and normal .tga file. When I view one of files, each piece of the armor is clumped together next to every other piece of armor. Is there a tutorial here or elsewhere that will walk me through the process of attaching the stuff on these tga files in the right places on my model? Thanks in advance.

I think what you need to search is uv unwrapping and mapping tutorial.
“attaching the stuff on these tga files” You put the tga file on the stuff.
Do you have more then one image for one object? then you need a tut on multiple materials.