Linux is an open system. You can probably download a copy to your PC right now, free. That's the good and bad news. It's open, so you can make it do what you want. It's open, so others can make it do what they want it to, including mess up your PC. Never DL from a website unless you absolutely 100% trust it, and then be wary, because a lot of virus programs won't work on Linux.

Linux is adaptable to what you want it to do, if you know how and can program. Programming isn't all that hard, but if you screw up one little letter in one line in a multi line program - oh no -- you can spend days looking for the problem. Not that all programs aren't like that, but in Windows and I think Mac OS you can't wander in and change a lot of stuff.

I've worked with both MS and Linux, and like both for different reasons. The big reason I use MS now - 95% of programs are written for it. Yes, I know you can get the same results with Linux and some add ons. The best part of Linus tho - few if any people write viruses in it, but when they do - yikes.