What is the best way to learn how to make shaders?

Questions
1

Does anyone have suggestions? I reference would work to.

Thanks,

Prynok

2

Try my tutorial posts.

http://coolcodea.wordpress.com/category/shaders/page/3/
http://coolcodea.wordpress.com/category/shaders/page/2/

And to learn lighting…
http://coolcodea.wordpress.com/category/shaders/

Shaders are a lot of fun and not nearly as scary as they seem.