Yes Bayla, in Photoshop sharpening in under the filter menu.
You can sharpen you normal way.
As for the amount, I have a set amount I keep around 85 and 1.4.
Not sure why or how I got there but I don't really move it. (maybe I read it in one of Scott Kelby's books)I always duplicate and if it is too much I lower the opacity. I do a lot of selective sharpening face, eyes, but for that I always use highpass sharpening.
I think it depends more on what type of image you are using. His purpose of sharpening his image is so the image itself does not get lost in all of the textures being applied.
I hope you give it a try....
