I just want to file my federal, not my state with turbotax. How do I do this?
You have two options when it comes to skipping the state return to file only your federal return.
If you already started a state return, you can delete it, as long as you haven't paid for it yet (or registered your free version with the state attached).
Or you can pay for the state now and just choose the "I'm not ready to file" box and then proceed with federal return only.