Well you have two ways you can get the state returns completed. The expensive way and the inexpensive way. But whichever way you choose the state tax returns can only be printed and mailed, they cannot be e-filed.
The inexpensive way is to go to the Indiana Department of Revenue website for the prior tax year years, fill in the forms online, print, sign, date and mail each tax year in a separate envelope to include all W-2's and Form 1099's that have state taxes withheld for that tax year - http://www.in.gov/dor/3488.htm
The expensive way is to use TurboTax to complete each tax year for the state returns. You will need to download the TurboTax desktop editions for each tax year to your personal computer. Install the software and open the tax data file for that tax year. Download the tax data file (.tax) for each tax year from the online accounts.
From within the desktop program installed and started, purchase and download the state program for that tax year. The state software is currently $44.99 not including sales taxes (if any). This would have to be done for each tax year.
Additionally, if you did not use and pay for one of the online editions of Deluxe, Premier or Home and Business to complete the federal return, then you would also have to purchase the Federal desktop program for each tax year at this website - https://turbotax.intuit.com/personal-taxes/past-years-products/
If you did pay for the one of the online editons, then you can contact TurboTax support and they should be able to push a desktop installation file to your download account for each tax year at no charge.
See this TurboTax support FAQ for a contact link and hours of operation - https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number