Where can i find tutorials on creating shaders?

Hallo, i’ve tried searching, but did not find anything that goes deep into shader programming with openGL, i would like to know if anyone of you guys know where i can find some good tutorials, in depth, advanced tutorials on shader develpment.

Many Thanks, Thales

Delete this post- umm I uh mis-read the title…

Um, those and shaders Kamiyama
I’m also starting out on learning GLSL, and this place here seems quite good.

Have you tried PMing the shader god Martinsh? Check out his blog: http://devlog-martinsh.blogspot.fr/

I’d rather not bother him, i’ll try looking around some more, if it comes to that, i talk to him, hehe, many thanks people!