Here’s a neat trick if, for some reason, you want to change the checkout form heading in WooCommerce. By default, the heading is named “Billing Details” and you can change this to whatever you want in just a few steps.
First off, you’ll need to copy the template to your theme or more specifically, your child theme since you definitely should be using one.
The template can be found at:
\woocommerce\templates\checkout\form-billing.php
You should copy and paste it at:
\yourtheme\woocommerce\checkout\form-billing.php
Afterwards, just open the copy that you pasted into your theme and find the following lines of code:
<?php if ( WC()->cart->ship_to_billing_address_only() && WC()->cart->needs_shipping() ) : ?> <h3><?php _e( 'Billing & Shipping', 'woocommerce' ); ?></h3> <?php else : ?> <h3><?php _e( 'Billing Details', 'woocommerce' ); ?></h3> <?php endif; ?>
Once you find it, simply change “Billing Details” to the text that you want to replace it with.
If you have donned the Storefront Theme by WooThemes and tested the mobile view, you might have noticed that your main navigation/menu turns into a collapsible menu. While this menu does serve its purpose in the mobile view, it being named “Primary Menu” isn’t very desirable. You most likely need to change it to something more appropriate for your needs.
So far, we’ve talked about optimizing images, caching, and minification. This time around, we’ll talk about Content Delivery Networks or CDN. You will learn how to use a CDN to speed up your website.
To set up CloudFlare manually, 
