How to sharpen knives with a whetstone?

How to sharpen knives with a whetstone?
To get started sharpening chef's knives with stones using the methods demonstrated by Davis here, you will need a medium-grit whetstone (about 1000) for making a new edge, a fine-grit stone (4000-6000) for finishing the edge, and a coarse leveling stone/plate for keeping your other stones flat.