This tutorial is to place a custom Mailchimp form on your landing page.
If you want to use the landing page’s default form (which collects emails only), then see Setting up Mailchimp for the default subscribe form.
2. Click on the down arrow next to Stats for the list you want to your visitors to subscribe to. Then click on Signup Forms.

4. Scroll down until you see the Sub-heading, Copy/Paste onto your site. Select all the code inside the box. Clicking inside the box should select it all. If not, click inside the box and press Ctrl+a. Then copy the code to your clipboard with Ctrl+c.

7. Put your the Custom Email Form shortcode, , in the Content Area where you want to display the form. The Custom Email Shortcode will be where your email form appears.
8. Save and preview your landing page. Your Mailchimp form will appear wherever you placed the shortcode.
Click here to see Mailchimp’s tutorial on sending the subscriber to a custom thank you page