Sign up form not showing up on website

Hi,

I’ve been trying to add a sign up form on my website and followed the steps mentioned in the description. I’m afraid I may not have understood the step below correctly.

“Show a sign-up form in your widget areas using the “MailChimp Sign-Up Form” widget.”

How to I show a sign up form in the widget area?

And also, how do i do the step below?

Show a sign-up form from your theme files by using the following PHP function.

<?php

if( function_exists( ‘mc4wp_show_form’ ) ) {
mc4wp_show_form();
}

Thanks in advance. Disclaimer: I’m very unsavvy with coding.