Where To Find Rust On Steam?

[frankiegoesto]

I was just wondering where you find rust on steam, I have a steam key but I don't know what to do with it.

[Starscre4M]

go here:
[IMG]http://i.imgur.com/6gfv16Q.jpg[/IMG]
Activate a Product on Steam

then press Next > I Agree and put your key

[gooooooooooogle]

restart steam if it doesn't appear in your library