This might be helpful if you're not happy with your existing OS, I switched over completely 10 years ago, after getting fed up with fixing broken windows.
There are many different distributions of Linux to try, the most user friendly in my experience is Mint
The user guide is here.
Three basic steps to get started.
1. Downloada Mint ISO image ( I prefer Mate, but any version should work)
2. Copy the Imageto an unused USB stick (2GB minimum)
3. Bootfrom the USB stick.
I'll try my best to answer any questions in the comments below.
There is a more detailed tutorial here. (requires a blank DVD and a DVD drive)