How to add icons to Zorin 18 desktop?

[Storm]

Are you talking about a downloade icon theme? If so you need to extract the package to ~/.icons

How to set a third-party icon theme

Download a third-party icon theme. You can find many community-created icon themes on Pling.com Launch the Files app and open the "Downloads" folder Right-click on the downloaded theme file and select "Extract Here"[extract-icons] Select the newly-extracted folder, right-click on it and select "Copy". Please make sure that there is a file named "index.theme" directly inside this folder. Return to your Home folder in the Files app. Open the app menu to enable the "Show Hidden Files" option.[hi…