How do I go back to my 2018 tax return. it was saved

Go to Downloads and a list should pop up.  Find your Tax Return and click on it.  If you saved it then it should be here.

If you just need to get back online and complete your return, you will log in to your TurboTax Online account using the same password and user name that you used to create your account.  Then you will click on Take me to my return.  Next you will click on Continue where I left off, now you can continue to fill out your tax return.