If you have earned income for 2017 tax year, you should go to the Deductions and Credits area of TurboTax, then to Retirements and Investments and enter an Traditional IRA.
This will show you the tax impact. It is a deduction (not a credit) that you would get if you are eligible to claim one.
The IRA can be funded by the due of the 2017 return (April 17, 2018) and must be designated as a 2017 contribution.
A Roth is not deductible.
Your age is fine to do this.
