In order to untag each book as 'read,' you'll need to go to each book's detail page and select the yellow button in the top left corner. That will remove that title from the 'books read' section on your profile.
Check out our How-To article on How to Tag a Book, that explains the process step-by-step!
Still have questions? Email us at firstname.lastname@example.org and our team will be happy to help.