How to edit a file from a command line

[The_Bear]

Hey people how's it goin?

I'm running SuSe development 10, although my question is so simple I don't think that it matters.
I've mostly been brought up on windows, so I don't have that much experience with command line arguments.

As such, how do you edit a file from the command line?

let's say for instance that your files name is index.html

--
I tried to do
edit index.html

which gave me this result:

"index.html" [Incomplete last line] 88 lines, 4209 characters
:

then
vi

which opened index.html in the command prompt....can I edit the program/save the program there? How do I make changes? Where can I learn the language?

[elija]

The Vim commands cheat sheet

should help you get started with vi / vim, another alternative is to try the editor nano

nano index.html

[oz]

If you happen to have vim on your machine, you can run vimtutor from the command line for a quick tutorial that's easy to understand.