11 Very useful Excel keyboard shortcuts you may not know

These shortcuts will save you many trips the excels menu

1. F4 - During formula typing, adjusts the reference type, abs to relative, otherwise repeats last action
2. ctrl key+; - Inserts current date
3. ctrl key+ - Copies value from cell above to current cell
4. shift+F2 - Edits a cell comment
5. alt+F8 - Opens macro dialog box
6. alt+= - Auto sum selected cells and places value in cell beneath
7. ctrl+shift+$ - Currency formats current cell
8. ctrl+shift+& - Applies outline border to selected cells
9. ctrl+shift+! - Comma formats current cell
10. shift+ctrl+f - Activates font drop down list
11. shift+ctrl+p - Activates font point size drop down list

Source: http://chandoo.org/wp/2008/07/29/excel-keyboard-shortcuts/