If this is your daily driver computer, download the LTS version. If you want to live on the bleeding edge, grab the latest release.
There are hundreds of Linux distributions available, each with its own unique features, goals, and target audiences. Some popular Linux distributions include: linux iso image download
Now that you have a verified ISO file, it’s just sitting on your hard drive. It’s useless there. You need to "burn" it. If this is your daily driver computer, download