The entire UNIX manual is online on CMGM and PMGM. To get help while logged in, all you have to do is type
man name_of_UNIX_command, for example
will bring up all the online help on the "ls"
We have the entire UNIX online manual available at this site.
For more help, check out some of these on-line UNIX Manuals
Everything you might want to know about UNIX
Sweet Hall Consulting UNIX Classes