Pop down to your local hardware shop, head into the aisle for sharpening stones, grab a double sided coarse/fine one.
Really there's not much magical in the stone. If you have the right technique you can get a good working edge on the side of a brick. I used to worry a bit, but really sharpening just involves setting your angle, locking your wrist, and rubbing on the stone till you get a burr on the other side of the edge, flipping over and doing the same. You can clean the edge by dragging it through a cork, or a couple of strokes on a leather belt, or just don't worry about it, any remaining burr will come off when you cut with it for the first time. I use stones with water or dry myself, it's less messy than oil.
I've checked all the knife stores and hardware stores and they only have expensive single diamond stones. I know people can get a nice edge with random things. I even saw a video of a survival guy sharpening his knife with the rim of a car window. But aren't those less reliable and convenient methods? Lol
I just want a simple stone solution that can get my knife as sharp as I described. I've read through a lot of the forum, but everyone has a different method and wants their knives different sharpness levels. I can't seem to determine what level of grit is appropriate for my situation.
If I got a water stone would a 600/800 grit be good for bringing my knife to utility sharpness and then a 1500-2000 for refining the edge so it shaves and lasts longer? Would I need to strop it for any reason to make the edge hold better? Or would it just further sharpen it? Or is that necessary to get shaving sharp?