This document provides tips for debugging issues with a WooCommerce site. It recommends remaining calm when a site whitescreens, asking questions to identify when and how the problem occurred, and using tools like the System Status Report and browser developer tools to look for errors or outdated plugins/themes. The tips suggest fixing issues on a staging site with backups, deactivating all plugins except the problem one to troubleshoot in a vacuum, and googling or contacting support if the issue cannot be resolved.