The Windows 10 Upgrade is still free. It is a time-consuming process, but if you still want to upgrade your older PC, you can get it here:

https://www.microsoft.com/en-us/software-download/windows10

Using the Download Tool Now button, you can get a small upgrade program to run on your Windows 7 or Windows 8 PC. As long as the license on your Windows 7/8 is legitimate, this tool will convert that license to a real Windows 10 license as you install. And you will get the option along the way to keep your files and programs.

Now, should you upgrade? In 2020, my answer was: Meh. Only if you really want to. But here we are in 2023 now, and things have changed. As of 2023, Win7 and Win8 computers are beginning to malfunction, more and more. Browsers are refusing to update. Secure websites are failing to load. All because of the out-of-date OS. If you’re dealing with these difficulties, Windows 10 may be the answer, but…

You should NOT upgrade if your computer is running poorly or too slow for your tastes. A Windows 10 upgrade will only make it run slower, or can possibly cause underlying problems to rear their heads. If this is your situation, it may be time to consider buying a whole new computer.