Wayne,
The best advice I can give you is read the literature that comes with the program. In it are examples where you would use what and why. Read it, then read it again.
It contains guides for starting points in understanding what it will do.
For an 8mp camera you would use the high resolution choices in capture sharpening. I could give you settings for what I use, but they probably won't work for you. Whether you use wide, medium, fine or superfine depends on the content of the image. Again, the literature will guide you.
The best results will come with experience. Each photo is different and will require different settings for the result you want. Don't be afraid to adjust the layer sliders and watch what happens. If you don't like the results, just delete the layer or layer group.
Like anything else each person has to develop the skills necessary to achieve their goal. The only way is practice and more practice with a lot of mistakes along the way.
Rich