This section contains some useful 3D techniques using Direct3D.
Collisions - handling collisions
Skybox - drawing a skybox
Camera - how to implement a camera
Terrain - how to create some terrain
Picking - how to pick a 3D entity using the mouse position
Screen Quad - how to draw a quad directly to screen space. Useful for UI elements, overlays etc.
Misc - a set of miscellaneous answers to questions on things like HUD, 3rd person camera etc.