"Vi, an exellent text editor included with Linux, is an exellent break from multi-megabyte word processing
applications and bloatware but is not known as the most 'user friendly' application in the world. Let's
take a few minutes to check out common vi editing commands and tricks to make you more competent
with undoubtedly the most prolific editor for UN*X based systems."
"Vi uses different modes to assist you in editing files. When you edit or open a file with vi (by entering vi),
you're in command mode. In this mode, all the keys on the keyboard have special commands, for
example, the i,a, and o keys will change you into insert mode. In insert mode, you can directly edit a
file. To return to command mode, just tap on the key."
"With this list of commands, you should be able to start using vi. If you experiment on your own and read
up on the man page you be an expert in in no time."