Stuff

/ - System root
        /Applications - Folder full of binaries
        /Users - User stuff, home folders, etc
        /Kernel - Kernel file system, like /proc on UNIX
        /System - Libraries, core bins, etc
        /Volumes - Where everything is mounted
        /Conf - Configuration files
\ - Hidden system stuff
        \Devices - UNIX like device nodes
        \Swap - Memory based temporary file system, aka swap space
        \Admin - Administrator's home directory