If you are still on Windows XP, it’s probably best to switch to Linux since Microsoft no longer supports updates for XP. And Linux Mint is probably the best way to go. Some reckon it’s the Ubuntu killer!
Linux Mint is one of the most popular distros around, and for good reason. In many ways, it looks and feels like XP, with the old-style Windows taskbar and Start Menu. The big benefit is that it is one of the most stable distros and has a large community of developers and supporters, plus it is in active development (so you are assured of critical updates).