How to install software?

I’m trying to add LaTeX functionality to my website and found the following instructions:

I downloaded the TeXlive package but am not sure how to install it. I’ve used ssh a bit before, but never to install software. Could anyone give me advice?


LaTeX should already be installed on your server. This is a good thing — it’s notoriously difficult to install otherwise.

Really? That’s great! Is there any documentation on how to use it? A quick Google search and a search in the Dreamhost wiki didn’t reveal anything. Thanks!