I upgraded to premier by accident thinking I could go back to free but it wont let me clear and start over now, what do I do to get back to the free edition?

As long as you have not already submitted payment, deducted the TurboTax fee from your refund, or registered your product, you should be able to clear and start over. If you are still having issues with starting over, I would suggest contacting TurboTax customer support for assistance.

Thanks!

Or if it doesn't let you clear and you haven't paid and filed you could just start a new account.  Online is only good for 1 return per account.  But you can use the same email address for 5 accounts.   How to start another return in the Online version

https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-start-another-return-in-turbotax-online/00/25596

When you are getting your return started there is a page that says register now and save time later.  If you register, then you can no longer change to a lower price version of TurboTax.  You have to create a new account for this year.