You will need to understand a few things about the DirectX Graphic Concepts.
Start with Lesson 1: Understanding Graphics Concepts (it’s lesson one for DirectX, the other four lessons were related to Windows Programming).
Once you have worked through the DirectXTutorials, the MSDN material at Create your first Windows Store app using DirectX and related links might make sense, maybe not. Before you use any of the MSDN tutorials make sure you fully understand the documentation at DirectXTutorials, otherwise you will simply doze off and head over to Unity or YoYo Games, not a bad thing, but it won’t get you any DirectX knowledge.
The link>> Direct3D 11 Features has a number of links that describe the graphics capabilities of DirectX.