General Windows keyboard shortcuts
Alt + Tab
Switch between open applications in all versions of Windows. Reverse the direction by pressing Alt + Shift + Tab at the same time.
Ctrl + Tab
Switches between program groups, tabs, or document windows in applications that support this feature. Reverse the direction by pressing Ctrl + Shift + Tab at the same time.
Alt + double-click
Display the properties of the object you double-click on in Windows 95 and later....