The first thing you need to do is determine the bevel of the knife edge. This is pretty simple, just take a permanent marker and color the edge. Then try different guide holes til you find the one that removes the most material from the edge. This may take a while if you are using standard stones, so be patient, then sharpen away, (first with the coarse stone). Start one one side and sharpen til you feel a little burr. Then switch to the medium stone to start smoothing it up. once you've gotten it as smooth as you can with that then go to the fine stone, you may get a burr that doesn't want to go away, if this happens alternate sides with each swipe using very light pressure.
If you are using the standard stones it may take a while, but stick to it and you'll get it.