This lab introduced me to user and group account management in Linux. I practiced creating and modifying user accounts, setting passwords, changing login shells, and adding users to groups while verifying changes using system files and commands like grep. I also worked with group management by creating and renaming groups, adding users without removing existing memberships, and changing file ownership. A challenge was keeping track of the correct command options and understanding how group changes affected file ownership. Overall, it improved my understanding of Linux user administration, permissions, and group-based access control.