Microsoft Natural KEYBOARD Shortcuts-

* Win = (Display or hide the Start menu) 
* Win +BREAK = (Display the System Properties dialog box)
* Win +D = (Display the desktop)
* Win +M = (Minimize all of the windows)
* Win + Shift +M = (Restore the minimized windows)
* Win +E = (Open My Computer) 
* Win +F = (Search for a file or a folder) 
* CTRL + Win +F = (Search for computers) 
* Win +F1 = (Display Windows Help)
* Win + L = (Lock the keyboard)
* Win +R = (Open the Run dialog box) 
* Win +U = (Open Utility Manager) Accessibility Keyboard Shortcuts 
* Right Shift for eight seconds (Switch FilterKeys either on or off)
* Left Alt +left Shift + PRINT SCREEN = (Switch High Contrast either on or off) 
* Left Alt +left Shift + NUM LOCK = (Switch the MouseKeys either on or off) 
* Shift five times (Switch the StickyKeys either on or off) 
* NUM LOCK for five seconds (Switch the ToggleKeys either on or off) 
* Win + U = (Open Utility Manager) Windows Explorer Keyboard Shortcuts 
* END = (Display the bottom of the active window) 
* HOME (Display the top of the active window) 
* NUM LOCK + * = (Display all of the subfolders that are under the selected folder)
* NUM LOCK + + = (Display the contents of the selected folder) 
* NUM LOCK + - = (Collapse the selected folder) 
* LEFT ARROW = (Collapse the current selection if it is expanded, or select the parent folder) 
* RIGHT ARROW = (Display the current selection if it is collapsed, or select the first subfolder)

Keybord shortkut Keys-

* CTRL + C (Copy) 

* CTRL + X (Cut)
 

* CTRL + V (Paste)
 

* CTRL + Z (Undo)
 

* Delete (Delete)
 

* Shift + Delete (Delete the selected item permanently without 

placing the item in theRecycle Bin)
 

* CTRL while dragging an item (Copy the selected item)
 

* CTRL + Shift while dragging an item (Create a shortcut to the selected item)

* F1 key (Display Help)

 

* F2 key (Rename the selected item)

 

* F4 key (Display the items in the active list)

 

* F4 key (Display the Address bar list in My Computer or Windows Explorer)

 

* F5 key (Update the active window)

 

* F6 key (Cycle through the screen elements in a window or on the desktop) 

 

* F10 key (Activate the menu bar in the active program) 
 

* CTRL + RIGHT ARROW (Move the insertion point to the beginning of the next word) 

 

* CTRL + LEFT ARROW (Move theinsertion point to the beginning of the previous word)

 

* CTRL + DOWN ARROW (Move the insertion point to the beginning of the next paragraph)
 

* CTRL + UP ARROW (Move the insertion point to the beginning of the previous paragraph)
 

* CTRL + Shift with any of the arrow keys (Highlight a block of text)
 

* Shift with any of the arrow keys (Select more than one item in a window or on the desktop, or select text in a document)
 

* CTRL + A (Select all) * F3 key (Search for a file or a folder)
 

* Alt + Enter (View the properties for the selected item)

 

* Alt + F4 (Close the active item, or quit the active program) 

 

* Alt + Enter (Display the properties of the selected object)
 

* Alt + Spacebar (Open the shortcut menu for the active window)

 

* CTRL + F4 (Close the active document in programs that enable you to have multiple documents open simultaneously)
 

* Alt + Tab (Switch between the open items)
 

* Alt + ESC (Cycle through items in the order that they had been opened)

 

* Shift + F10 (Display the shortcut menu for the selected item)
 

* Alt + Spacebar (Display the System menu for the active window)
 

* CTRL + ESC (Display the Start menu)
 

* Alt +Underlined letter in a menu name (Display the corresponding menu) Underlined letter in a commandname on an open menu (Perform the corresponding command)  
 

* RIGHT ARROW (Open the next menu to the right, or open a submenu)
 

* LEFT ARROW (Open the next menu to the left, or close a submenu) 
 

* Backspace (View the folder one level up in My Computer or Windows Explorer) 

* ESC (Cancel the current task) 

* Shift when you insert a CD-ROM into the CD-ROM drive (Prevent the CD-ROM from automatically playing) Dialog Box Keyboard Shortcuts

* CTRL + Tab (Move forward through the tabs) 

* CTRL + Shift + Tab (Move backward through the tabs) 

* Tab (Move forward through the options) 

* Shift + Tab (Move backward through the options) 

* Alt +Underlined letter (Perform the corresponding command or select the corresponding option)

* Enter (Perform the command for the active option or button) 

* Spacebar (Select or clear the check box if the active option is a check box) 

* Arrow keys (Select a button if the active option is a group of option buttons) 

* Backspace (Open a folder one level up if a folder is selected inthe Save As or Open dialog box).

FULL FORMS OF SOME EXTENSIONS...

MP2 - MPEG AUDIO LAYER 2 

MP3 - MPEG AUDIO LAYER 3

MP4 - MPEG LAYER 4

MPEG - MOTION PICTURE EXPERTS GROUP 

3GP - 3RD GENERATION PROTOCOL 

 

AVI - AUDIO VIDEO INTERLEAVED 

AAC - ADVANCED AUDIO CODEC 

AC3 -AUDIO COMPRESSION (DOLBY DIGITAL SOUND FILE) 

MIDI - MUSICAL INSTRUMENT DIGITAL INTERFACE 

MMF - MUSIC MOBILE FORMAT 

IFF - AUDIO INTERCHANGE FILE FORMAT 

AMR - ADOPTIVE MULTI RATE 

AWB - ADOPTIVE MULTI RATE WIDE BAND 

DLL - DYNAMIC LINK LIBRARY 

EXE - EXECUTABLE FORMAT

FLAC - FREE LOSSLESS AUDIO CODEC 

FLV - FLASH LIVE VIDEO

GIF - GRAPHICS INTERCHANGE FORMAT

JAD - JAVA APPLICATION DEVELOPMENT

JAR - JAVA ARCHIVE

PDF - PORTABLE DOCUMENT FORMAT 

PNG - PORTABLE NETWORK GRAPHICS

RM - REAL MEDIA

SIS - SYMBIAN INSTALLATION SOURCE

SWF- SHOCK WAVE FLASH 

CDA - COMPACT DISK AUDIO 

VCD - VIDEO COMPACT DISK 

DVD- DIGITAL VIDEO DISK 

VOB - VIDEO OBJECT 

WAV - WAVEFORM PCM AUDIO

WMA - WINDOWS MEDIA AUDIO

ZIP - ZONE IMPROVEMENT PLAN.