Not really sure what this website is asking. Does the person want to: Rig? Texture? Model? Write drivers? Make GUIs? Animate websites? Make graphics tools? Work with shaders? Or work with 2D photo engines? Make 2D games? Make 3D games? Write procedural scripts? Optimize graphics code?
There are hundreds of disciplines that fall under "computer graphics". The website focuses on a teensy little corner: programming graphics SDKs.