Linux is extremely well documented, you should not expect to become a Linux expert straight away, while it maybe frustrating you will benefit from spending the time to read the manual pages. Linux has a command called man . Think of man as an on-line quick reference guide for almost every application, utility and command on your system. The man pages work just liked the unix command less. To quit out of man pages press q, and use the arrow keys for navigation.
Man is short for manual.
You should use the man command to learn about commands you are not sure about. Red Hat Directory Structure Linux distributions and other UNIX type operating systems such as Solaris have a particular directory structure. You may notice commands that work the same in Linux as they do in other UNIX operating systems, with minor differences. The one key difference between one Linux distribution and the next is where files are located. The Red Hat Linux directory structure is used in many distributions, including Caldera OpenLinux.