If I've already printed my taxes how do I go back and e-file them?
See this TurboTax support FAQ for changing from mail to e-file - https://ttlc.intuit.com/community/e-file/help/how-do-i-change-from-mail-to-e-file-in-turbotax-online/01/26985
Go to the taskbar right underneath the BLUE turbotax banner and click on the "FILE" tab. A sub-menu will then appear and then choose "File a Return". Follow the steps provided.