How do I restart my taxes ?

You can use TurboTax's Clear and Start over option,  as long as you haven't submitted payment, deducted the TurboTax fee from your refund, or registered, you can erase your return and start from scratch in TurboTax Online.

1. Sign in and select a topic to continue your return.
2. On the next screen, from the left-side menu, select Tax Tools, and then Clear & Start Over (select the menu icon in the upper-left corner if you don't see this menu).
3. Answer Yes in the pop-up to confirm.

I have a purchased cd.  That only works with online.  I really screwed up!  Do not want to buy new cd.

If you have the desktop program, you can use the File menu at the top to start a New Tax Return or Open an Existing Return.    You can create as many as you need.  @flotsamfred