Before you can start a campaign, which is defined as "emails sent to subscribers in a list" you will need to Create a list.

First, fill in the List Details.

Create a unique name for this list -- you may be creating new lists in the future -- and fill in the rest of the info.

After you "Save" this page, you will be taken to a page to "View subscribers"

Since at this point "You have no subscribers" click on the link for "setup a signup form"

This will bring you into a page for "Signup forms"

Click on either the "General Forms" select button or on the name "General Forms" as indicated in the screenshot.

Signup Form

This is where you will design the signup or opt-in form.

On this image Arrow #1 points to the dropdown box that moves through a number of useful options -- the default option is Signup form.

This dropdown box will be used to complete some other steps later in the process.

Arrow #2 points to the "plus" and "minus" symbols used to add or delete fields in your signup or opt-in form.

Use this page to make the opt-in form look the way you want.

When you are satisfied, it is time to test it out on your website!

To logout of MailChimp, click on the downward facing arrow as shown in the following screenshot.

Then click on Log Out on the dropdown menu as pointed to by the bottom arrow.