Thanks 
I’m a huge free software fan, so… YES you should try linux on your computer, completely unrelated to what your phone is running! No, i’m just kidding of course. You don’t have to run Linux on your pc to install and use Ubuntu Touch (and vice-versa), but i could imagine that it doesn’t hurt. You can try most distributions without installing by running them from a live USB stick, so maybe you will find something that clicks with you. For beginners starting with Ubuntu or Ubuntu MATE is always a good idea, but everybody has a different opinion on that, as you can see here.
This is also true! And did someone already mention that the OS and most applications are free?
Long story short: That’s a different choice for you to make. Not a requirement for Ubuntu Touch, but a different (and fun!) adventure. But keep in mind that Ubuntu Touch itself is designed for phones, and handles some key tasks different from how a common desktop GNU/Linux distribution would.
This is where it gets tricky. While we do now have means of installing without using the command line, we can’t guarantee it will never be necessary. We try to avoid it, but since we’re only a small project, mistakes happen, which can easily be fixed by a simple terminal command most of the time. Of course the command-line can be intimidating to new users, but remember that you have a community around the project who’s always happy to help you, if you have questions. And, who knows? Maybe you’ll even like it! I sure did.
Let me put another disclaimer here and say, that Ubuntu Touch is not as stable as Android or iOS. I myself use it on a daily basis, and i get along just fine, because the values it entails and the community around it outweigh the limitations for me. If you’re fine with that, you will probably love Ubuntu Touch just as much as 660+ other people in the UBports Telegram Supergroup.
If i didn’t drive you away just yet, here’s how to install!