Dynamic cookies (follow-up)

Could you give great detail on how to setup the cookies feature. I have a simple form on my website which requires users to provide name & email before downloading a PDF. There are many different PDFs on my website and I would like the form the autofill users name and email after the first time they provide those details. I’m having trouble with this process and could use some help. I searched your youtube channel but didn’t find anything there. TIA!