CGCookie - Styling and Shading Realistic Hair

https://cgcookie.com/courses/styling-and-shading-realistic-hair

Creating realistic CG hair is often a huge challenge, but with the right techniques it can become fairly easy. By following along with this tutorial series, you'll learn how to style hair based on regions of the human scalp (like a hairdresser), as well as tweak the particle settings and Cycles shaders to get as close to realism as possible.