Steps to create a script in Dynamo Civil 3D

I want create a script in the Dynamo Civil 3D. My aim is to automate the process of giving inputs from excel sheet containing coordinates of the images. These coordinates be written in the property of the images, so that the images can be placed as per their coordinates.
I want to know the steps how to write the script for this process.




Can you tell me that, do we need to have any programming knowledge to create a script in Dynamo?

the Dynamo Primer is a good start to learn more about how to use Dynamo
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