Managing cc.openstax.org

Go to https://open-stax.squarespace.com/config/ (login is necessary, cc.openstax.org/config also takes you there)

Uploading Files

• click the + next to Not Linked
• Choose Link
• Click "Click to add URL"
• Click "Files"
• In Existing Files, you can search for and delete files to be replaced; you can also rename existing ones
• Upload files in the fairly obvious way
• If you Cancel instead of providing a link name, the file won't be listed under Unlinked Pages, but it is still accessible, which is all you want.