Now get the specific information you want to acquire on checkout page with the help of WooCommerce checkout addon by FMEAddons. After installing this extension, you will be able to edit checkout page by adding fields in shipment or billing section. You can add various fields and customize its labels according to your preferences.
The extra fields are also shown on order page and thank you page to your users. Checkout plugin for WooCommerce provides easy backend as you have to just drag and drop the fields. Placeholder for fields is also available on field labels form. The free version of checkout add-on is also available.
More Details: WooCommerce Checkout