>I just don't know what to download though! lol
Just to give you a bit of background on Linux.
Linux is not created by one company but by computer experts and IT students all over the world, who all do their bit.
The main Linux code is given away for free, and there are lots of Linux applications that are also free as well.
Many companies take this "free" Linux code, and various free Linux applications, and "package" their own version of Linux.
So there is not just one "linux" there are many, each one packaged for a different audience, or a different environment (like a web server).
Some versions of Linux run directly from a CD, giving you the chance to try it without having to uninstall Windows, so maybe you could try that.
In most cases you will need to download the code, then "burn" a CD that you can then use to install Linux.
There are plenty of people around who can help you with Linux if you get stuck installing it or setting it up.