Quit this sh**

Simply quit it:

:q

Oh, you wrote stuff and want to save it:

:w <a file location>

A lot of people will suggest you "write and quit":

:wq

Shh, they are so wrong and I think they are still noobs:

:x

Ah, you don't care, I forgot, add a ! that's all you need.

:q!

Other stuff

One easy yet powerful skill when you start: use ctrl-c instead of esc to switch modes.

Thank me later.

What, it is too simple?

Hey, fancy stuffs are supposed to be hard, you'd better RTFM and use it as much as you can.

Last but not least

It's just a tool, use it wisely, don't attach to it.