Hello @peasquared,
Thanks for asking. 
There are two way of enabling Google Analytics on your website, First is plugin and second is custom code.
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Plugin route: If you want to add Google Analytics via plugin route then please install and activate Google Analytics plugin from X > Validation > Extensions. Please take a look at following tutorial to get started with the plugin.
2. Custom code: The reason why we encourage users to install and use child theme (you don’t have to create child theme, we have done it for you) is because you are not directly fiddling with the core theme files. Let’s say you made the changes in the core theme files to add Google Analytics and in future you decide to update the theme. Please note that the changes you did will get overridden with the new files and at times that create lot of additional problems. To overcome the same issue, WordPress community came up with the idea of child theme. To lean more about the benefit of child theme, please take a look at the official WordPress documentation:
https://codex.wordpress.org/Child_Themes
In that regards we highly encourage yo to install and activate child theme. You can use following resources to download and setup child theme.
Download Child theme from following source: https://theme.co/apex/child-themes
Please take a look at following article to setup child theme:
After that add following code in child theme function.php file to setup Google Analytics code.
function third_party_tracking_code() { ?>
<script>
// Google Analytics.
</script>
<?php }
add_action( 'wp_head', 'third_party_tracking_code' );
Replace // Google Analytics.
with the tracking code.
You also have the option to use Header and Footer plugin to add tracking code. Here are the details:
Note: Please note thatHeader and Footer plugin is not a official Themeco advice. It’s just a personal input that I have shared with you to help you get started. 3rd party plugins may cause some issues and we won’t be able to provide support in that scenario.
Thanks.