References
https://help.ubuntu.com/community/UsingTheTerminalβThe Ubuntu community help page for using the terminal
https://help.ubuntu.com/community/LinuxFilesystemTreeOverviewβThe Ubuntu community help page for and overview of the Linux file system tree
https://help.ubuntu.com/community/RootSudoβAn Ubuntu community page explaining sudo, the philosophy behind using it by default, and how to use it