I have three tips:
1) Start with a mora or scandi grind. This has a wide flat edge bevel that you can rest on the stone. As long as you apply a bit of pressure it basically will lay itself flat at the angle you need to sharpen. Whereas with a very small conventional secondary bevel you have to guess what the angle is and try to hold your hands steady.
The most difficult part of the sharpening stroke to me is following the belly curve to the tip- you have to lift the handle up from the stone as you get closer to the tip. With a scandi bevel you can really feel where the bevel needs to rest on the stone, and you can start to develop the feel for how much to lift the handle as you sweep along the belly curve. Once you have the feel it is more intuitive to pick up a secondary-edged knife and hold the angle around the belly curve.
2) Bio-mechanics: I think the principle is to keep the movement confined to the joints that are furthest from the knife. In other words, instead of moving your fingers and wrists, move at the elbow, shoulder, and waist. If you are in a standing position you can even bend at your knees. Try to think of your arms from the forearms down as a fixed jig; once you have the angle set in your "jig", keep it that way, and move the entire jig across the stone with the rest of your body. If you try to do the movement with your wrists it is difficult to hold the angle steady. Hopefully this makes sense.
3) Sharpie. Mark the edge before you take it to the stone, then after a few passes look and see where the sharpie was removed. You have the angle right when the sharpie is removed across the entire edge bevel, keep adjusting the angle until this is achieved. Even if you have almost no skill, you can get a good edge if you make rigorous use of the sharpie. The skill will just let you do it more efficiently.
Other than that, just practice. Besides the mora I recommended, just get some cheap pocketknives or kitchen knives, something you're not afraid of ruining. Dull them by lightly dragging the edge at 90 degrees to the stone, then try to sharpen. Once you get it sharp, dull it again and repeat. That would be the fastest way to learn.