Linux Mint can replace windows. It can run windows applications with wine. It basically has a start menu. It is very user friendly. I linux newb can use Linux Mint. It is much faster than windows on older machines. Now if your machine is running Windows XP I don’t recommend your try Mint. It is faster at playing games because Linux is lighter weight. Even playing minecraft on my laptop has better performace running Linux vs Windows with even higher graphics settings. Some games are less optimized for linux and do run slower. But if you have an old computer sitting there waiting to be scrapped, try linux.