I am currently running elementary OS Freya 0.3.1 and am looking for an upgrade.Which would be most suitable to upgrade too and how would I do this.I have seen some talking about clean installs,which version should I use and how would I do this. Thanks
Currently, development is working towards elementaryOS 6 which should come out sometime this year, 2021. At this time, elementaryOS 5.1 Hera, the latest release, is recommended. You can grab the ISO from elementary's website and follow their installation instructions to perform a clean install. This will overwrite all the data on your disk so first backup all your necessary data to the cloud, another computer, and/or an external drive. Make sure to test your backup so you're certain all of your important data is accessible and valid.