The Basics
Tutorial 1 - Initialize XNA. Tutorial 2 - Rendering a triangle.
Tutorial 3 - Spinning a triangle. Tutorial 4 - Texturing a quad.
Tutorial 5 - Lights and Materials. Tutorial 6 - Alpha Blending.
High Level Shader Language
Tutorial 1 - Simple Shader. Tutorial 2 - Diffuse Shader.
Tutorial 3 - Texture Shader.