@llamasjm 'home' is /home/phablet. You can reach the contents of "/" with the File Manager, opening the menu with the left-upper button, and then using your password to unlock. But you should better use the 'Terminal', so you can use the sudo command to make changes as to delete directories or files. Open Terminal from the Apps scope. Then do cd /, then ls. To change to directory dir use cd dir. To remove a file filename use sudo rm filename and enter your password. To remove a directory and its contents use sudo rm -r dir.
