Microsoft Excel Cheatsheet reference guide...

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Selecting
Ctrl + Spacebar - Selects the entire column in a worksheet.
Shift + Spacebar - Selects the entire row in a worksheet.
Copy and Paste
Ctrl + C - Copy selected text.
Ctrl + V - Paste copied text.
Ctrl + Alt + V - Opens Paste Special dialogue box.
Ctrl + D - Uses Fill Down function to copy contents and formatting of top cell to selected cells below.
General
Ctrl + 1 - Format Cells dialogue box.
Ctrl + Z - Undo
Ctrl + Y - Redo
Ctrl + F2 - Print Preview
Ctrl + F - Find and Replace dialogue box
Alt + Shift + F1 - Inserts new worksheet.
Navigation
Ctrl + Home - Returns to cell A-1
Ctrl + End - Moves to the last used cell in the worksheet.
Function Keys
F1 - Help
F2 - Edits active cell, puts insertion cursor at end of cell contents.
F4 - Repeat last command or action.
F7 - Spellcheck
F11 - Creates a chart of data in the current selected range.
F12 - Save As...