For those used to Windows system, you might find Linux folder system
is totally a confusion for you. Folders name such as /bin, /etc, /media
really didn’t clear indicate the purpose. And most of the time you
don’t know how to get back to the original path.

Here is a picture clearly illustrate how Linux folder system really
works. Hope this really give you a clear picture. Basically, I normally
mess around in /mnt, /etc, /dev and /home.