To open a command prompt window in any folder, simply hold down the Shift key and right-click on the desktop. In the context menu, you will see the option to Open command window here.

To make Notepad files always open in a new or separate window in Windows 11, open Notepad setting and change the 'Opening files' option.

You can open the Command Prompt on a PC by right-clicking the Start icon, by searching for it, or by opening the Windows System folder.