To upgrade or switch to a higher version of TurboTax Online please see this TurboTax FAQ: https://ttlc.intuit.com/community/upgrading/help/how-do-i-upgrade-or-switch-to-a-higher-version-of-turbotax-online/00/26239
Install on Windows or Mac? Do you have the CD or buy the download?
How to install Turbo Tax on Windows
https://ttlc.intuit.com/community/refund-status/help/how-do-i-install-the-turbotax-software-for-windows/00/25934
If you are having trouble downloading to Windows
https://ttlc.intuit.com/community/installing/help/troubleshoot-turbotax-for-windows-download-issues/00/25753
How to install on Mac
https://ttlc.intuit.com/community/installing/help/how-do-i-install-the-turbotax-software-for-mac/00/26067
@Jarson
Please see this TurboTax FAQ.