GameDevelopment?

Ok my Gamedev books just arrived, so since I'm curious about many things I'll start to note some relevant topics here(at least some which seem relevant to me)

Used Programming Language: C++ on Windows (DirectX9c?) and Visual C++ 6.0

DirectX Components:

 DirectX Graphics
 DirectX Audio
 DirectInput?
 DirectPlay?
 DirectShow?
 DirectSetup?