Go to www.google.com/tagmanager and click the Start for Free located in the top right corner.

On the next screen, click Create Account.

Under Account Name, enter your website URL.
Under Container Setup, add your business name.

Scroll down to Target Platform and select Web.

Once your account is ready, a pop-up will appear with Google Tag Manager’s Terms & Conditions. Click Yes.

You’ll then see your GTM snippet, the script that goes on your website. Copy it and paste it into your site’s code.
You’re all done!