Yes TurboTax would help you prepare a proper return. My "personal favorite" is TurboTax Home & Business, downloaded or CD version -- this keeps everything on my personal machine for future use and the fact that I can get to forms mode to make sure I understand what the software is doing.
The double taxation issue is dealt through foreign earned income exclusion and foreign tax credit. For the former you need to have established a foreign tax home ( by passing the Physical Presence Test -- 330 days away from the USA in a test period of 365 continuous days). Thus for you, qualifying may take till middle of 2019 -- suggest you file for an extension and as soon as you qualify, file the return. Don't forget that you may also have to file a state return depending on the exact facts and circumstances
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