It's nice to be Windows Free
What if I ran Linux as the o.s. on an older cpu I have?
This is the best way to begin to free yourself from all the bugs attacking M$. Linux runs great on old PCs or brand new ones.
wollensak and islandman4567 post excellent advice on your options.
I pretty much did the same a little over 4 years ago. Got fed up with all the security scans you have to run with M$ to keep it clean and bug free and decided to give Linux a try on advice from a buddy at work. It was the best advice I ever got. Now 4 yrs later all self taught, it's not that hard, I am totally Windows free. Can do everything needed with Linux. It is far more secure than Windows and have never had any security, virus, malware attack. Ubuntu is easier than ever to use now compared to 4 yrs ago. Ubuntu help Forums are massive and huge to answer any questions needed.
All my PCs are dual booted so I still can run Windows if desired but lately Windows is only used to do needed M$ updates and AV updates. Setting up a dual boot is easier than ever now. You just have to do a little reading on the Linux sites to get familiar with totally different way of doing things with Linux. As you move along you will see Linux is laid out in a very logical efficient manner. Definitely worth giving a try since it runs great and won't cost you a penny.....