After you file

"I am an international student."

TurboTax can only prepare tax returns for US citizens and Resident Aliens; i.e., a regular Form 1040/A/EZ.   It cannot prepare a Form 1040NR or 1040NR-EZ.  People in this forum can help you determine your status and whether you can use TurboTax or not.

What is your citizenship status?  What dates were you in the USA?  What visa were you under?  Were you married?

You are asking about filing a prior year return--i.e. tax year 2014, right?  That requires purchase of the 2014 desktop software (CD/download) and installing it on your computer--IF you are eligible to use TurboTax for a resident return.