Win+R → write “powershell” without quotation marks → and terminal opens.
Very good instructions are here for Zone.ee server users on how to get to your shared hosting through SSH. For beginners this is super useful.
Ubuntu terminal on Windows 10
It is also possible to use Ubuntu terminal on Windows 10. You can download it from Microsoft Store, for example here. But, before you can install it you have to set your Windows settings to developer mode.
If you do not do this then simply does not work. Maybe there was something in addition to that but at this point I do not remember 🙂 But it took few hours to figure out why does the Microsoft Store installation fails.