Can i file using Turbotax?. I'm on H1B Visa since December 2015. Can I use TurboTax for filing tax returns. Entered US first time in Dec 2015.

Yes, if you have been present in the US since December 2015, you are likely considered as a US resident for tax purposes by passing the Substantial Presence Test SPT.  You can use TurboTax to file your 2017 taxes