There are hundreds of Linux distros you can use. Linux will bring you the freedom of free and open source software that you don’t get with other operating systems. Recent releases like Linux Mint 18 are very popular, as well as the latest release of Ubuntu.
Below is a list of different versions of Linux you can try before installing.
These are only a few that i recommend but there are much more out there. You can test many of them before you make your choice!