The strop is something that I have never understood.
I know it as a strap that was used for keeping an edge on the old hand razors that barbers still use but I know nothing as to whether it is used with abrasive or if it is abrasive in itself. Now that it's been mentioned here a couple of times, I am off to find out some more.
I am also intrigued by the aforementioned palm slapping technique. I also saw it mentioned on a webpage about the Scary Sharp technique after @Jimothey mentioned it.
I have an oilstone that came with my late father's tool kit. It looks like it is made of two different grades of stone, one on either side. Is that possible? I am sure it could use a dressing but I am not sure yet whether to do that or take up an alternative technique. This topic helps a lot in making that decision.