I think this is a good question that needs clarification. I'd vote for off-topic because:
There are a lot of fundamental tools to create game-assets. Eg. Photoshop/GIMP or Illustrator/Inkscape for textures or 2D game-assets. Audio- and video-editing software for soundtrack/effects and cut-scenes.
Most if not all of these tools have something in common: You don't use them exclusively for game production. So a question about learning the basics of such a program is definitely off-topic. If the question was specifically targeted at game-development, that would be something else.
Just because a program is being used in the game production pipeline doesn't mean we should answer questions about that here. If some people choose MS Word to write their design documents, we wouldn't want questions along the lines of: "How do I create a heading in Word"
I'd consider something along the lines of
"How do I learn Photoshop/Maya/3D Studio Max/Lightwave" as off-topic whereas something like "Best Maya setup for low-poly modelling" or "How to bake normal-maps in blender" as on-topic (although one could argue about that too).