Download a Linux Live CD, a Linux that runs entirely from the CD and requires no partitioning, formatting etc. You still have Windows, and you have Linux whenever you insert the CD, it's useful for a try out to see if you like it.

Examples:

https://www.knoppix.net/about.php
https://www.ubuntu.com/desktop
https://kanotix.com/index.php?&newlang=eng

Or choose from this list:

https://www.frozentech.com/content/livecd.php


It's easy to use until you get a problem.

Linux is cool for five minutes, but it never takes too long until you're missing Windows (in my experience, anyway).  I've got an XP/Ubuntu dual boot system but I can't remember the last time I used Ubuntu.

...edit

In fact, based on this thread and my post, I've just gotten rid of Ubuntu and I can't say that I'll miss it