Password Strength Meter Customization
WooCommerce has a built-in password strength meter, which you can find for example in My Account – Account details. And as everything else in WooCommerce, it has a pretty neat customization with hooks.
Here is how it looks and works by default:

Checkout Fields Tutorial
This is all in one tutorial about WooCommerce checkout fields. We are going to edit WooCommerce checkout page by removing fields, renaming them, making them optional or required and of course, we are going to add a custom field to checkout as well.
Well, let’s get started. But first of all, let me introduce you woocommerce_checkout_fields
filter hook. Most of the things we are going to do with its help.