i need help to add fields in product and order

[Ruli246]

Hello everyone,

 

my name is Raul and I am mounting an e-commerce with prestashop 1.7.1.2,

I have seen several post and tutorials and I do not finish understanding how it works.

I need to add a field in product and in the end checkout, both 2 type text

In the sql already create the fields in the corresponding tables, but I do not know how to follow or what files to play in order to display those fields and save them in the sql.

Thank you very much for your help and greetings