Get me started Please

Get me started Please

Hi,
Just set-up Zoho CRM and works great. Now trying to use Creator to solve Quoting system and I don't have any coding experience although fairly intuitive.
 
Can somebody help me solve a script to get me started.
 
I have a form called Materials with a field called Product_Description and Product_Std_Cost
 
In my current Form called Modular Component I have one field called Material_1 which is a lookup of Product_Description field in the Material Form. All fine up to here.
 
In my Modular Form I want to create a field called Material_1_price which i want to populate automatically on user input based on the Material_1 lookup selection.
 
I have gone around in circles - please help