Prior to Windows 10 1903, you can give both word and voice commands to Cortana since it is combined with Search. Then you can set your Cortana by typing 'Cortana settings' in the search bar and following the next instructions. You can use Cortana as soon as you upgrade your computer to Windows 10. Also, it gives us quick access to software, documents or browsers. It is quite a good helper to learn about our preferences and schedule our life. Cortana is a smart assistant released by Microsoft.