my great grandpa was a big tool/carpenter guy, and i always hear great stories about him whenever i pull out a knife or a sharpening stone.
my dad once told me what my great grandpa told him, how to check for sharpness by tapping the edge on your fingernail to see if it sticks or skates.
i started reading articles and articles, getting the same thing out of all of them. i tried using flakes of bricks and fine river stones, as i read about as emergency sharpeners. it didn't work, but i still managed to cut myself occasionally.
i finally saved up about $12 or so and bought a two sided 6" bench stone at the hardware store and got to work sharpening anything i could lay my hands on. after about six months i got it down pat and was getting almost shaving edges without a strop or anything, just using the "fine" side of the stone (which i now consider fairly course). i mostly just tried until i found something that worked.
now i mostly use a 1x30 belt sander, except for some tools that don't work very well. i still break out the stones from time to time, but its mostly the sander and sandpaper on mousepad for me.
i do want to get some diamond benchstones though...