Linux File System hierarchy

It is useful to know that...

/ is root directory that contains all (Like C:/ in M$)
/bin dir contains binary(executable) programs which can run both root and all users
/sbin these are for root
/usr/bin /usr/sbin the same but it is not necessary to the system
/boot contains bootloader and kernel files
/dev contains special device files (all devices practically are files :D )
/etc (useful!) It contains configuration files both system and programs
/home Home directory for users
/root Home dir for root
/lib Dir that contains libraris (system)
/usr/lib For programs
/mnt Directory for mounting filesystems (you can do it anywhere thou)
/media More better name for it
/opt 3rd party programs
/proc Special dir..you can list it and found a lot of interesting stuff
/var Dir that contains variable files/dirs for ex. logs
/tmp Temporary dir..no comments


Feel free to explore it ;)