Most sharpening systems are pretty much the same, guided stones on easy to maintain angles. Thats really what sharp is, symetry of your angles.
There is a book, by Steve Bottorff, called, Sharpening Made Easy. Its cheap, and very well written. I would consider it the must read for a beginner sharpener. It will detail everything, with some great pics to assist in the learning curve.
Next, you can practice on a beat blade if you wish, but for me, each knife presents a different challenge when sharpening. Thicker, blade shape, edge angle, metal composition, etc. I say jump in, with both feet and get started. You won't tear it up, and the experience you gain while sharpening it, will go towards a knife you want sharp, not some beater that you don't.
Just my opinions here, nothing to see, move along now.
Moose