If you are a U.S. citizen, you are required to file a tax return for your world-wide income even if you live abroad. As for using TurboTax---you can use TT, but paying for the software can become problematic for some ex-pats. It helps a lot for you to have a U.S. based bank or credit card account.
https://ttlc.intuit.com/community/payments/help/what-forms-of-payment-does-turbotax-online-accept/00/26079