In this tutorial, I walk you through the process of creating a downloadable pdf in MailChimp along with a landing page.

https://www.youtube.com/watch?v=expAXgcGHH4

Here’s the step-by-step instructions:

1. Create your pdf document.
2. Go to Templates>Content Manager. Click Upload and select document to upload.
3. Copy the URL
4. Create a new List (now called Audience)
5. Create a Landing Page. Go to Campaigns>Create Campaign>Landing Page.
6. Set up Automation. Go to Campaigns>Create a Campaign>Create Email.  Design the email.  In the email, include a button that links to the URL of the content that was uploaded in step 2.
7. Important (this is missing from the video). In the Automations, click Edit Trigger.  Set the trigger to 0 days so the email is delivered immediately.

I hope this helps you get started with creating opt-ins on Mailchimp.