It depends based on what program is being used. For Mac users, you would simply quit and reopen the program to check for updates. Otherwise, the TurboTax menu is referring to the menu bar at the very top of the program beginning with File.
For TurboTax CD/Download, see:
How do I update my TurboTax CD/Download software program?
Troubleshoot TurboTax for Mac updating issues
Why does TurboTax for Mac keep saying there are updates when I check for updates?
