How many whetstones should I buy when starting out?
While it is tempting to buy every grit available when starting out. I recommend getting a good sharpening whetstone when learning how to hand sharpen. That way, you can focus on learning good sharpening habits, and mechanics, while learning whether, or not, you actually want to continue with sharpening your own knives. Once you have a good grasp on hand sharpening and whetstone maintenance, you can then consider what your needs are, and plan your next whetstone purchase.