One thing I left out was the ABSOLUTE necessity that all stones be flat. Beyond that you can try just about anything. Once you gain some experience you might find a convexed surface useful but I find the narrow stones do what's needed without being convex.I look forward to the day I get to experiment with the stones. One step at a time though.
A 6x2 stone is fantastic but a lot can be done with those 1.5" wide stones. If you can only get one stone a combination Coticule/bbw is capable of SO much.