It's just so much faster. I can do everything I can in windows(except plug n play gaming) but for free and it's all faster, and every situation you'll encounter as a noob has been meticulously detailed in some forum by an expert for another noob who ran into your problem years ago.
And at this point, you can choose any popular flavor of Ubuntu, install it in twenty minutes or less, and the gui is so intuitive you don't have to even use the terminal if you don't want to(although it does make you feel like a cool hacker). Just enjoy the secure, free, incredibly fast OS.
Go on YouTube, search for how to install whichever Ubuntu flavor looks cool to you and you'll be set.