You'll be spending the most time with the 100 grit stones if you're changing the angle. The way to find out when you're done is to check for a burr all along the blade. If you think you're getting close to the edge, focus on just one side of the knife for awhile, then feel the opposite side for a burr. If there's a prominent burr all the way along the edge, you're there. Then just do a few light alternating strokes before moving on to the 200s. With the finer stones, you don't need to worry about a burr any longer, just go until the scratches from the previous stones are gone.

Another thing to remember is not to smack the diamond stones or ceramics into the knife. This could lead to chipping in the edge. Always be gentle when putting the stone against the blade.

I'll readily admit my biggest issue with starting was getting the right "feel" pressure wise on the diamond stones and strops. Once you do get that feel down though you start noticing a lot of subtle cues, like the sound of the stones as they reach that point where all the previous grit's scratches are gone. Sharpening zen, eh?