Press Alt + Tab to switch between open windows
Press Windows + Tab to open Task View and choose a window
Click the taskbar icon of the window you want
Use Ctrl + Alt + Tab to keep the switcher open and select a window
Press Windows + D to show the desktop
Press Windows + Ctrl + Left Arrow or Windows + Ctrl + Right Arrow to switch virtual desktops
Swipe from the left edge or use touchpad gestures if supported
Use Alt + Esc to cycle through windows in order