Keeping the operating system updated is essential for security and performance. Participants will learn to use Ubuntu’s Software Updater to install the latest security patches, kernel updates, and software upgrades. Regular updates help prevent security vulnerabilities and keep the system running smoothly. Additionally, participants will learn to enable automatic updates for critical system components to ensure the system remains protected even when updates are forgotten. This lesson also explains how to manage software through the APT package manager to uninstall unused programs that may be taking up space and affecting performance.