How do I file for extension

To file an extension for your federal taxes, please see How do I file an IRS extension (Form 4868) in TurboTax Online? 

Depending on your resident state, you may also need to file an extension for your state. Please see Do I need to file an extension for my personal state taxes? 

   Your link to the page for state extensions is a nice effort, but the link for New York state extensions is broken.  Please fix it.

You can file for an extension for free directly on the IRS web site.  You will need to have your best guess on taxes owed.

Extension of Time To File Your Tax Return | Internal Revenue Service (irs.gov)

Revisit your NY state interview in TurboTax.  

1. Scroll down to "Other forms and voluntary contributions" section.  
2. Update the "Other Forms" topic.  
3. Start the "Request for Extension of Time to File" topic

@jonesbshopper