So I'm interested in the program Gravit, which runs on Linux, Windows, and OS X. However, I'm not good with anything other than .zip files containing .dmg files (lolo), so anything that requires I download stuff and configure stuff is just... Well, I think you get it.

Seems to be a documentation on what to do for Unix based systems (duh), but I'm totally clueless. Where do I need to put the files I download? What *exactly* do I have to enter in the terminal?

I'm just like, completely out of it. I've been using for Mac a little over a year now and have tried to install programs (such as Invision Power Board) for test usage, but this is so awesome I just can't quit trying to get it. So yeah, help me please?