I do a lot of cooking. Because of that, I am constantly using my knives, and because of that, my knives are constantly losing their edge. Whether it is in the kitchen or out on the farm, one of the most dangerous pieces of equipment is a dull knife. A dull edge will cause you to push harder and become, even slightly, off balance. If that happens during a moment of distraction or a sudden give of what you are cutting or slicing, very serious consequences may result.
I watched a number of videos that claimed to show the proper way to sharpen a knife. Many of them just showed the basics of honing a knife (and some of them improperly at that). The following video is well done and not too long. On top of that it was taped at my alma mater, the Art Institute of Fort Lauderdale! That's where I got my first degree to become a graphic designer... well before the thought of an M.D. ever crossed my mind.
Here it is. Enjoy!
Also, here is a link to a pretty darn good informational page on how to sharpen a knife. A bit different than that video above, but there are many ways to correctly accomplish this task.