I've made a couple dozen knives, and sharpened quite a few more.
It's a great skill to have!
My current favorite technique/tool-set is using a piece of flat wood or glass and a selection of wet-dry sandpaper, spine of hte knife facing you, drawing the spine of the knife towards you as the edge is held down on the paper at the desired angle (10 to 20 degrees for kitchen knives, err lower rather than higher... it really depends on the construction of the knife, but that's as close to a rule of thumb as I can give).
Stay away from anything involving a grinder, belt sander, something you draw the blade through, ceramic sticks, sharpening "steels", etc. Some work, some don't, all require a LOT more practice than stones or wet-dry sandpaper to not screw it up horribly... I have a belt grinder, and it'll go from "perfect" to "aw, s#!^... looks like I'm starting over!" in about a nanosecond.
Sharpening stones can make a great edge, but take the right stones, and the right technique. The "flat plate and wet-dry sandpaper" will get you 95% of the quality of a VERY expensive set of stones, with a lot less investment of time and stones. Seriously, a good "hard arkansas" stone is near $100 for a SMALL one, and good japanese water stones (of which you need several) are at least that... and require you to use them with a flood of water.
There are some very good videos on Youtube of how to use wet-dry paper for an excellent edge.
Also, most towns and cities have someone at a knife shop that sharpens for "$x per inch of blade"... if you want it done right, with minimum fuss, just have them sharpen. I've done that (even though I know how, and have all the stuff) when I was given a good set of kitchen knives that had been treated badly... Had them back in two days, as sharp as I could have done 'em for a few bucks each. Now I maintain them.
Hope this helps!
Paul F.
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A sword never kills anybody; it is a tool in the killer's hand. - Lucius Annaeus Seneca c. 5 BC - 65 AD
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Good is the enemy of Excellent. Talent is not necessary for Excellence.
Persistence is necessary for Excellence. And Persistence is a Decision.
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Eureka, CA