make skin appear real and hair in blender

hello i am new to blender and i have two questions.
Even though i have made a character and applied material and some lightning effect i still can’t get somewhat skinny color …some what red as like real one. if you see video by andrew price at that time… though the object is not so real but when rendered it gives very realistic image!
And I want to make hair for my character. I found every one using cycles render. But when i do cycles render it takes forever… about half an hour for an image. So i want to make hair in cycles render and later choose blender render. What will happen if i do so?
If you have any links please help me… Thank you!

So i want to make hair in cycles render and later choose blender render. What will happen if i do so?
Cycles and Blender Render materials are not compatible so you would have to remake hair settings and new materials