I pressed that I had a job and a W-2 by accident, and now I have to continue as if I had one. Where do I change that?

You need to go back to the beginning of the whole section and then select "walk me through it".  Click okay to everything UNTIL you get to the question about job and W-2.  At that point you can enter the correct response.

You might be asked if your want to delete the "job entry".  If so, say YES.

Follow the instructions below to delete that W-2.   It's easy to remove a W-2.

1. Open or continue your return.
2. Search for W-2 using the search in the upper right corner and then click the Jump to link in the search results.
3. This brings you to the Here's your W-2 info screen. Click the trash can icon next to the unwanted W-2 and then answer Yes on the following screen.