In his follow-up post, Tavares delves into image processing by showing readers how to manipulate image colors and detail in WebGL. He concludes on a positive note highlighting the user-friendliness of this API . . .
I hope you can see that WebGL is actually a pretty simple API. While it can get more complicated to do 3D that complication is added by you, the programmer, in the form of more complex shaders. --Gregg Tavares
For some more resources on WebGL development, check out the Mozilla Developers Network