100 most important Keyboard Shortcuts

Keyboard Shortcuts (Microsoft Windows)
1. CTRL+C (Copy)
2. CTRL+X (Cut)
3. CTRL+V (Paste)
4. CTRL+Z (Undo)
5. DELETE (Delete)
6. SHIFT+DELETE (Delete the selected item permanently without placing the item in the Recycle Bin)
7. CTRL while dragging an item (Copy the selected item)
8. CTRL+SHIFT while dragging an item (Create a shortcut to the selected item)
9. F2 key (Rename the selected item)
10. CTRL+RIGHT ARROW (Move the insertion point to the beginning of the next word)
11. CTRL+LEFT ARROW (Move the insertion point to the beginning of the previous word)
12. CTRL+DOWN ARROW (Move the insertion point to the beginning of the next paragraph)
13. CTRL+UP ARROW (Move the insertion point to the beginning of the previous paragraph)
14. 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)
15. CTRL+A (Select all)

Useful Short Cuts for using symbols through Keyboard

Alt + 0153... ™... trademark symbol
Alt + 0169... ©... copyright symbol
Alt + 0174... ®... registered trademark symbol
Alt + 0176...°..... degree symbol
Alt + 0177...±.... plus or minus sign

How to make smiley faces
Alt + 2 .....☻.....black smiley face
Alt + 15.....☼.....sun
Alt + 12......♀.....female sign
Alt + 11.....♂......male sign
Alt + 6.......♠.....spade
Alt + 5.......♣...... Club
Alt + 3............... Heart
Alt + 4.......♦...... Diamond
Alt + 13......♪.....eighth note
Alt + 14......♫...... beamed

Eighth note
Alt + 8721.... ∑.... N-ary summation(auto sum)
Alt + 251.....√.....square root check mark
Alt + 8236.....∞..... infinity
Alt + 24.......↑..... up arrow
Alt + 25......↓...... down arrow
Alt + 26.....→.....right arrow
Alt + 27......←.....left arrow
Alt + 18.....↕......up/down arrow
Alt + 29.....↔...left right arrow