To be comfortable shooting manual you will need to know what your necessary adjustments are. Though these settings are all numeric, there isn't some insane math equation that you need to do to find out what to dial
Pinner said: "Read this article and you'll learn how to adjust your camera to get the perfect shot. I've been wanting to know how to do this." I sez: Pinning all the cool links in the world will not help my photography if I never, ever read them.