Do a google search for The Museum of Woodworking Tools. They have lots of info on sharpening and a store. The biggest natural stones I've seen are 8" x 3", so getting a longer stone might be a problem, but you can sharpen nearly everything on an 8" stone. KME sharpeners has great prices on good stones (and is a sponsor here).
As for a strop, lots of guys put some sort of rubbing compound on leather. I kind of think that defeats the purpose. In many cases the compounds guys are using are coarser than the final stone they honed with! IMO a strop should just be some untreated oil tanned leather on a flat hard surface and used to take off whatever remains of the burr after the final honing. It doesn't have to be real thick leather b/c you back it up with something, but it should be a firm temper. You can pick up work chap scraps for a few $$ a pound and have enough for a lifetime of strops.