Hello,
I have two Curves. One of the Curves I divided by length every 10 meters. Then I used curves closest point to get the points on the other curve. Now i like to move the points along the curves by 0.3m. When i use the move component the points move outside the curves. What can I do?

with Divide Curve You were not dividing into 10m segments. What you were doing was dividing it into 10 segments (each 1/10 of the curve). For what you want to do, you use Evaluate Length with the settings shown in the image.
Also: now it is not needed anymore, but in the future if you want to use part of a list, you can use split list instead of typing each item you want to remove.
hope it helps!