That link doesn't seem to work. Is
this what you have? I don't know anything about it, but if you have already used it and it works, then you could just keep using it. Although I don't think it will ever get a knife truly sharp.
I personally use a vertical belt sander to sharpen my knives, but A) it wouldn't work on that knife because of the blade shape and B) it takes some practice to know what you're doing. I know that Lansky and DMT make attachments for recurve blades for their systems but I don't know how well they work. I've never used a Sharpmaker but it looks like it would work too.
Here is my suggestion.
1.) Buy a system that sharpens one side at a time. The Sharpmaker has been suggested. Seems a tad expensive to me, but I'm cheap. Buy a cheap knife with a similar blade style (look at eknifeworks.com or budk.com, you'll probably find something close for less than 10 bucks). Read the directions that came with your sharpener, and practice on the cheap knife until you know what you're doing.
2.) Find someone in your area that sharpens knives and have them do it.
What do i need to sharpen different kinds of grinds? and are there any good sharpeners that hold the knife for you, so you can get a more even bevel?
I think you're confusing "primary grind" and "edge grind". The "primary grind" is the overall grind of the knife. It is rarely changed from the way it origanally comes. The "edge grind" is how the very edge is shaped. It is usually shaped like a V and is sharpened at different angles depending on how the knife will be used. Sometimes the edge will be convex, chisel, etc., but I bet that if you look at your knives, they probably all have a V grind. As for holding the knife. The Lansky and DMT systems clamp onto the knife and use guide rods to keep a consistent angle. I think with the Sharpmaker you just hold the blade straight down, so it would still be very consistent.
The main thing i would stress is to not learn on a $130.00 knife. Buy a cheapie and practice on it. If you want a good knife without all the sharpening hooplah, you can get a Mora for $10.00, and they are easy to sharpen by hand even for a novice.