Michele Butcher provides tips for maintaining a WordPress site once it has been launched. Key recommendations include regularly backing up the site, updating plugins and themes, and using security plugins to protect the site from hackers. Additional tips include using strong and unique passwords, enabling two-factor authentication when available, and being wary of public WiFi networks without a VPN. Regular maintenance such as backups, updates, and security measures are important to keep a WordPress site safe and functioning properly over time.