To share a file in one of your public or private folders click on and highlight the file you want to share.
This will expand the detail panel. at the top right corner of your screen
Click on the share icon and a window will pop up in the middle of your screen that contains a link. You can now copy the link and send it to whomever you want to share it with and they will have access to the file forever.
NOTE: Sharing is only for Public Drives, Private Drives, and individual files. Folders cannot be shared at this time.
NOTE: Whomever you share a link with can also share that link with others. We plan to provide the option to limit the spread of link sharing in future versions of ArDrive. For now, links are unrestricted in how often they can be shared.