I am using Windows 10 Pro Insider Preview Build 10130, the latest Windows build available for Windows Insiders.
On the Windows desktop, Cortana is your personal assistant and available 24/7 to help you find stuff on your computer or the web. She can also work for you in the background if you like.
To enable Cortana, right-click on the Search toolbar on your Taskbar. See Figure 1.
Figure 1
You will see the Search results pane opened or other pane and you will also see a Settings icon at the top-left just below the Search icon. Click on the Settings icon, you will see a toggle, “Do you want Cortana to work for you?” See Figure 2.
Figure 2
By default, this toggle is off.
Turn on the toggle.
Now, you will see more options in the left side bar. See Figure 3.
Figure 3.
Figure 4 shows the list of things Cortana can do for you.
Figure 4
Feel free to play around and let us know how you like Cortana and its services.