Creating a form to collect name, e-mail and download a free e-book

Hi, this is my first post here so be gentle!
I have created a Wix landing page and where I’m offering a free e-book in exchange for their name and e-mail address.
How do I create the correct form to go at the bottom of the page?
Also, I want to create a button in the header offering the e-book that either launches the same input form in a new page. Or sends them to the form at the bottom of the page.
All advice gratefully received.
Best wishes

Are you looking to use and anchor maybe?

How to collect emails on Wix using Corvid custom form

Anchors look cool, I’ll investigate

These are cool videos and I will check out more.
What I want is for people to receive a download only after they give me their name & e-mail. They get an auto-respond saying hi, thank you and here is the e-book.
I collect there name and e-mail is the Wix csv system so I can do follow-up mails.

I have a three strip one-page format. There is a header, a middle strip with my video and a bottom strip with the form.

I also want to have a button on the header and middle strip to take them to the form as well.