You will learn how to get help for any command
0:00 Intro
0:40 tab completion
1:50 --help – Brings up a help menu
3:12 man – Brings up a manual for that command
4:03 info – to get information
5:15 apropos – Search for all the man pages in which the latter command exists
6:30 whatis – show one liner usage of the latter command from its manual