This is quite an easy start. If you can do a backwrap, you can probably do this start now. Get diabolo one spinning and put both handsticks in your left hand. Then, wrap the string around the near cup of diabolo two. Let diabolo two drop, attempting to make sure it stays in line with the other diabolo. If you get it right, the diabolo will start to spin quite quickly and move towards the other diabolo. To stop it colliding, undo the wrap as if it was in a backwrap.