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
Gary

Are you looking to use and anchor maybe? https://support.wix.com/en/article/about-anchors

How to collect emails on Wix using Corvid custom form
https://codequeen.wixsite.com/email-download

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.