This stone is perfect for those who want to learn how to sharpen their knives without making a huge investment. It is a bit smaller than the traditional/professional lines but will allow you to get the feel of moving through a progression of stones and help you decide if you want to invest more in your sharpening gear.
All of the whetstones sold at the shop are Waterstones, do not put oil on any of them, you will ruin your stone. Holding the knife at a consistent angle while sharpening is one of, if not, the most important thing to consider when sharpening; thus, maintaining a flat stone is of equal importance. Pick up a truing stone to maintain a flat stone in order to achieve the best results.