Not a lot of really good games for Linux though, but if you don’t care about that it’s cool. If someone just surfs the web, writes on LibreOffice and the basic stuff... Ubuntu Linux is great, and very stable.
(make sure to download a stable version, I still use 12.04 myself, there are also development versions)
Doesn’t even have to be Ubuntu, of course. BTW- Burn a disc or make a boot USB and try them out before you erase your Windows. Or better, keep Windows for things you can’t do with Linux yet.
Thanks!