Friend has a new desktop and has a specific preference for having multiple windows of the same browser open. On Windows 10 I found that's accomplished via: Settings/Taskbar/Combine Buttons on other ...
Select multiple files, right click on one of them and select Open. Or hit enter. It just depends on the registry entries for the file type whether they can be 'opened' more than one at a time. Oh, and ...
Virtual desktops in Windows offers an alternative to using multiple monitors, especially if you learn the gestures ...