My mom was just given a used computer, and I'm having trouble resetting it

[Xiahou]

I still recommend Linux Mint. If you've never used Linux before, there's always going to be a bit of an adjustment period. But Mint is, in my opinion, the most user-friendly for people coming from Windows.

The only choice you have to make is whether you want to use the Cinnamon or MATE desktops. Cinnamon is "newer" and a little flashier, so you might want to start there. You also have to pick between 32 bit and 64 bit versions. If you don't know which to pick, pick 32bit.