Under Linux, as with all UNIX(tm) systems, you have access to pages of the manual, called "man". They reference the majority of applications supplied with Linux-Mandrake, but also, for example, all the commands of C/C++ etc.
For example, you might want to know the parameters of the command "ls" which, by default, lists the contents of a directory. In a shell type:
man lsAnd you will see displayed the man page for ls.
To browse through the man pages, it is essential to know that: