Alright, since I'm _okay_ at using Linux (Not a pro in any way. Hell, I don't even know how to use the terminal so well) and since I do use it on occasion, I thought I'd make a thread to help new users out.
Okay, first of all you should know Linux is open source, which means the code is free and legal for anyone to edit in any way they wish.
Because of this, Linux has different versions or distribution (distro's for short).
Since there are hundreds and I'm too lazy to post each one (I don't even know each one) I'll just describe the ones most used.
Ubuntu - Which is used by millions. It boasts ease of access. New users to Linux or computers in general shouldn't have any trouble using it (trust me). It's very balanced.
Linux Mint - In my opinion, the prettiest one out there. It's good if you like to stay organized. It's geared more toward Office use or just browsing the web, but games and movies are very possible.
Debian - Best for techies. I don't have much experience in it. While Mint is based off Ubuntu, Ubuntu is based off Debian, so it's essentially the Grandfather of Linux.
Fedora - Darn. I suppose the essential stuff?
Arch Linux - This is actually my favorite. The reason being, you can tweak it how you want. You can build your ideal PC, and usethis. Keep in mind, advanced PC users only. You will most likely get frustrated at the text based installer provided. I know I did.
Don't even think about getting this without Linux experience.
Alright, just google the one you wish. They're all free. If you're thinking there are any commercial Linux distro's, then yes, there are. But I had not included them here.
(You can also virtualize these in VirtualBox)