begginer tutorial shader?
 

in the virtual vacation from your home page, you have a great water effect with a dolphin getting out of the water, i think is using a water shader and particles(thats other problem that i have:( ) effect for the dolphin.

I tried to learn how to write my own shaders for future applications like bump, specular,illumination, etc. to achieve a more realistic application but i couldn't find a easy tutorial (better if is video tutorial) to explain how to achieve this.

Right now in my application i have a beach but the water is a little flat and also the sand of the beach. So i really need to learn how to write shaders, to have a great impression on my works.

So if some one know a good start point for shaders would be very thankful.

PD If some also know for particles too

I don't have a particular tutorial to recommend but if you do a google search for GLSL tutorial you'll see a number of options that will introduce the subject.