Using a RenderTexture to apply a Shader to a texture

This seems like it would be easy, but I am having a lot of difficulty figuring out how to do this.

Here is what I want to do:
Take a Texture2D and apply a Blur effect to it and get the result. So it would be something like:
Texture2D blurred=BlurEffect(Texture2D InputTexture)

BlurEffect would setup a rendertexture and apply the blur shader to it.

Any suggestions on either:
A) How I would do this?
B) Where I would go to learn how to do this (RTFM didn't help too much )

Thanks!

 

Graphics.Blit is used to copy a render texture to another (or to the screen). Note that you cannot blit from a render texture to itself, so you need to create a second one.

The functions takes a material, which in turn can be created with a shader as parameter - the shader that will apply the blur effect.

The Unity standard assets already have a blur shader.

Hope this gets you going