Oil Stones differ from water stones in that they require the use of honing oil to float the swarf (metal particles). Also, these stones are commonly made from one of three different materials consisting of Novaculite, Aluminum Oxide (Corundum), or Silicon Carbide (Carborundum) and they all use oil to lubricate the stone and suspend the swarf in order to prevent the stone from becoming clogged. Also, while Novaculite and Coticule are the most traditional types of oil stones, there are also synthetic oil stones made by the Norton abrasives company called “India Oil Stones”.
I had wanted a pair of sharpening stones for a while, so was enthused to get this last week. I watched a bunch of YouTube videos on how to use them and a deburring strop I also bought and wow, my kitchen and pocket knives are now wicked sharp. Pro tip: if you post anything about it on social media, family and friends will almost surely volunteer their knives for more practice...
it's good, Came acceptably flat. I do wish that it was longer. and I have noticed that it is quite porous, Takes several days just to dry after using. This is something that may effect how you store the item and I found it to be rather inconvenient. Otherwise it's all good, doesn't wear TOO fast, but certainly faster than other high end stones. Cuts well for the price. Wish it gave more feedback, but again, the price is too good.
I was delighted to discover, on opening my recently purchased Kanpeki knife set, single-edged blades. I had never used single-edged blades in the kitchen. I was pleasantly surprised to find each knife was so versatile. Able to do the most delicate cutting, to the workhorse of basic slicing and dicing. I am pleased to say, I will be purchasing the remaining knives and whetstone.
But if you start mixing brands or systems, you can get in trouble. Here’s an example: Say you want to use a soft Arkansas oilstone as your coarse stone and an extra-fine India (aluminum oxide) stone to finish things up. Well good luck , both of these stones are the same grit (22 micron). Your edge won’t improve when you move to the extra-fine stone.

You love your set of knives from Food Network; you use them for everything, and it is starting to show. You know it is time for a sharpening stone to be used when you try to slice a tomato and end up squashing it against the cutting board. What once was a great set of knives is now a dull safety hazard, but they can be razor sharp again. Reliable sellers on eBay offer a variety of knife sharpening stone options. You can choose from a diamond sharpening stone, a wet stone, and several other effective options. The sharpening stone is lightweight and easy to ship, so sellers offer a variety of convenient shipping items to deliver your item to you quickly. Once it arrives, read all the instructions, and carefully sharpen each knife. After the dull knives have been honed, your favorite set of knives will cut as easily as they did when you bought them, maybe even better.
Honing is edge refinement. Honing is the last step in sharpening but it should be the only step required when your knife, chisel or plane irons have lost their keen edge. So honing is what you do between sharpenings, meaning that in fact most of 'sharpening' is actually honing (or should be), since you can hone dozens of times between sharpenings so it is done far far more frequently.
A common myth is that sharpening steels actually sharpen knives, and can replace stones or other sharpening devices. Steels actually hone a knife and help keep its edge if used regularly. A steel should be used before and after each knife use for proper maintenance. Easily enough, it's used the same way you use a sharpening stone. To find the proper angle, hold the knife horizontally with the edge touching the steel. Move the spine upward to create a 45-degree angle, and then half that again for your optimal sharpening angle.
Whichever method you choose, be it a waterstone (also known as a whetstone), or a pull-through (either V-shaped or ceramic wheels) it's important to regularly hone your knife with a honing steel, which we'll also cover below. You'll be pleased to hear that you won't have to reach for the stones too regularly – once every two or three months should suffice. 
I would recommend getting a stone with a lower grit (less than 800) after you get a polishing stone, as the main uses of a lower grit stone would be to take off a lot of metal very quickly (removing chips). Its better to get a bit of experience on something a bit slower (1000 grit) and learn to hold a steady angle before diving deep into lower grits. The only time I could have used a stone lower than 800 grit (I used a 500 grit) was when I was completely changing the edge on a Kasumi (59-60HRC) knife.