First thing to do is check whether your whetstone is a waterstone or an oilstone. (Lest you think I'm being patronizing, I for one used to think "whet" was "wet" as in "water." This is not the case!) Then make sure you use that term in your YouTube search so that you find the right vids. Also, some waterstones require 15-30 minutes of soaking beforehand, while newer ones (ceramic, Arkansas) do not.