This is the completing addition to my older post: Windows Key shortcuts. You might find some of it helpful and time-saving.

The following are general keyboard shortcuts:

? F1: Starts Windows Help
? F10: Activates menu bar options
? SHIFT+F10 Opens a shortcut menu for the selected item (this is the same as right-clicking an object
? CTRL+ESC: Opens the Start menu (use the ARROW keys to select an item)
? CTRL+ESC or ESC: Selects the Start button (press TAB to select the taskbar, or press SHIFT+F10 for a context menu)
? ALT+DOWN ARROW: Opens a drop-down list box
? ALT+TAB: Switch to another running program (hold down the ALT key and then press the TAB key to view the task-switching window)
? SHIFT: Press and hold down the SHIFT key while you insert a CD-ROM to bypass the automatic-run feature
? ALT+SPACE: Displays the main window’s System menu (from the System menu, you can restore, move, resize, minimize, maximize, or close the window)
? ALT+- (ALT+hyphen): Displays the Multiple Document Interface (MDI) child window’s System menu (from the MDI child window’s System menu, you can restore, move, resize, minimize, maximize, or close the child window)
? CTRL+TAB: Switch to the next child window of a Multiple Document Interface (MDI) program
? ALT+underlined letter in menu: Opens the menu
? ALT+F4: Closes the current window
? CTRL+F4: Closes the current Multiple Document Interface (MDI) window
? ALT+F6: Switch between multiple windows in the same program (for example, when the Notepad Find dialog box is displayed, ALT+F6 switches between the Find dialog box and the main Notepad window)

See the full list here.